Dissertations / Theses on the topic 'Càncer de cap i coll'
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Mur, i. Restoy Encarna. "Indicència i supervivència del càncer de cap i coll a la demarcació de Tarragona (1980-2005)." Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/96311.
Full textThis is a descriptive epidemiological study of head and neck malignancies in Tarragona province (609,673 inhabitants in 2001). Data of population-based incidence, mortality, survival and prevalence, were analyzed concerning 3,507 head and neck malignancies recorded in the Tarragona Cancer Registry during the period 1980 to 2005 (609 lip cancer, 410 tongue, 374 oral cavity, 142 salivary glands, 140 tonsil, 118 nasopharyngeal, 239 hypopharyngeal, 122 others of oral cavity and pharynx, 87 nasal cavities and sinus and 1,266 laryngeal cancer). The methodology of population-based cancer registries has been applied, following the criteria of the International Agency for Research on Cancer (IARC), in order to ensure both completeness and accuracy of data. Evaluation of the standard quality indices showed that they were appropriate for the anatomical sites studied, both individually and collectively. The temporal trend in incidence has been studied and its projection to 2010 and 2015 estimated. Results are referred by total head and neck and by one out of every ten localizations. It is emphasized that the age-adjusted incidence rate of laryngeal cancer in men is one of the highest in the world. International comparisons of the incidence and survival have been made. The survival rate has remained stable, and is similar to the rest of Europe The main conclusions are that the head and neck malignancies in Tarragona show a westernized epidemiological pattern, similar to Southern Europe. There is an overall reduction in the time trend of incidence in men, correlated with the reduction in tobacco consumption. The increasing trend in sites such as tonsil, has been correlated with the exposure to human papilloma virus. As in the rest of Europe, improvements in population-based relative survival was not observed, despite diagnostic and therapeutic advances in recent years.
Nogués, Sabaté Anna. "Llum de Banda Estreta en lesions premalignes i malignes de cap i coll. Utilitat i reproductibilitat de la tècnica." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667981.
Full textNarrow band imaging (NBI) in combination with white light endoscopy (WLE) is an endoscopic technique that identifies changes in the vascular patterns of the mucosa. The purpose of this study was to evaluate the value of narrow band imaging (NBI) examination in the office for the diagnosis and follow-up of upper airway premalignant and malignant lesions. Four hundred eighty lesions were evaluated with white light endoscopy (WLE) and NBI before a biopsy/excision. Additionally, 151 premalignant lesions were followed up without proven biopsy. Carcinoma-free survival was calculated. The learning curve was analyzed. Overall, the accuracy improved from 74.1% with WLE to 88.9% with NBI, being relevant in all anatomic subsites. The accuracy of NBI increased significantly with increasing experience (area under the curve [AUC] >0.9). After a follow-up of 25 months, 14 of 151 lesions (9.3%) converted into carcinoma. The 4-year carcinoma-free survival rate was 86.4%. The 4-year carcinoma-free survival rate differed significantly between lesions classified as benign/mild dysplasia versus those presenting as moderate/severe dysplasia (88.9% vs 73.5%; P 5 .018). After that, in a second study, we evaluated the characteristics of the falsenegative and false positive cases. Five hundred thirty lesions of the upper airways were evaluated. The WLE was followed by NBI examination before performing a biopsy. The false negative lesions (7.36%) were represented by submucosal and non-SCC tumors. Among the 25 non-SCC tumors, 72% did not show any suspicious vascular pattern under NBI. The false-positive lesions (6.04%) were mainly represented by postradiotherapy mucosal changes, ulcers, and infections. Regarding papillomas, NBI accuracy reached 95.32%, although cases with dysplasia were difficult to distinguish from SCC. Finally in the third study we assessed the intra and interobserver agreement of NBI and WLE at the office, under local anaesthesia, by either experienced or non-experienced observers. Eighty-seven images of head and neck lesions were routinely collected under WLE and NBI. A group of three experienced otolaryngologists and three medical students assessed the images after a brief training. No additional patient nformation was provided. The same protocol was repeated after three weeks. NBI intraobserver agreement was substantial (κ = 0.62) and better than with WLE alone, which was moderate (κ = 0.57) in both groups. Interobserver agreement was moderate with WLE (κ = 0.58) and substantial with NBI (κ = 0.63). Both groups improved intraobserver and interobserver agreement with the implementation of NBI. In summary, NBI provided a greater accuracy than WLE and showed promising usefulness for the follow-up of premalignant lesions., however, not all lesions were ideally evaluated with current defined patterns. An accurate anamnesis is mandatory, Finally, intra and interobserver agreement with NBI for the evaluation of head and neck lesions are substantial, and improve the results of WLE alone in both, professionals and trainees
Beltrán, Vilagrasa Mercè. "Impacte dels canvis anatòmics sobre la distribució de dosi en els pacients amb càncer de cap i coll tractats amb 3DCRT i IMRT." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/119733.
Full textThis thesis examines the dose implications related to anatomical changes experienced by patients with head and neck cancer (HNC) during radiation therapy (RT). The study is carried out for both conventional 3D conformal (3DCRT) and intensity modulated (IMRT) techniques. We have analyzed a large number of organs at risk, some of which have not been previously studied. Additionally, dose variables showing important variations were individually investigated for the group of patients treated with IMRT. Finally, we assessed whether treatment replanning is a good tool to restore the initial planning dose characteristics. The study included 28 patients diagnosed with locally advanced head and neck squamous cell carcinoma, 12 of whom were treated with 3DCRT and 16 with IMRT. The treatment area included the primary tumor in addition to the cervical and supraclavicular bilateral nodes. The methodology was designed to acquire new CT images of the patient in sessions number fifteen and twenty-five, approximately corresponding to the third and fifth week of treatment. The contours of the treatment volumes and the organs at risk defined in the initial planning CT were manually adjusted on these new CT images, followed by a dose distribution calculation corresponding to initial plan with which the patient is being treated. We analyzed data from the dose-volume histograms corresponding to dosimetry studies in each CT. Weight was recorded weekly for all patients. In the second part of the thesis, an individual study of patients treated with IMRT was made. Dose distributions calculated on CT’s taken during treatment were analyzed when the initial dose restrictions were exceeded or if variations less than -5% or above +10% with respect to the initial calculated values existed. When variability limits were exceeded, the corresponding CT dosimetry was adapted by optimizing field irradiation fluencies from initial treatment plan. Both groups of patients presented similar anatomical changes, including weight loss and reduction in volume of the following structures, namely the treatment area, the treatment volumes and the parotids. The weight and volume within the treatment area variables showed correlation. Implying that weight can also act as a prognostic factor to identify which patients may experience important changes in the treatment area. It has been shown that dose variations compromise the validity of the initial dose distribution to a greater extent in the IMRT group. This arises primarily because the treatment volumes exhibited coverage loss only in the IMRT group and additionally, because discrete measured dose increments to the organs at risk jeopardize the benefits that the IMRT technique provides. The individualized study of the IMRT group shows that the main factors indicating a need for initial planning modification: loss of dose coverage for the treatment volume, dose increases to the parotid glands and finally the absorbed dose increase to other organs at risk such as lips, the oral cavity and middle neck structures. Loss of dose coverage in treatment volumes together with dose increases to the OAR are detected mainly in TC2. Acquiring a TC at 15th fraction will therefore identify most cases that could benefit from adaptive RT. Finally, we have shown that replanning based on the optimization of initial field fluencies allow us to adapt the dose distribution to anatomical changes and thus achieve the same dose constraints reached in the initial plan.
Benavente, Norza Sergio. "Avaluació de factors mol·leculars associats a la resposta a anticossos monoclonals anti-EGFR: integració amb tractaments de radioteràpia en càncer de cap i coll." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/378365.
Full textBackground: Concomitant radiation and cisplatin can achieve high loco-regional control and survival in locally advanced head and neck cancer (HNC), particularly in the oropharynx, in HPV-positive tumors and non-smokers. Recent publications challenge the role of cetuximab plus radiation in this population suggesting inferior outcomes, which needs to be further confirmed. HPV-negative HNC seems to do far worse with current strategies. This study evaluates potential associations between long-term clinical data of a locally advanced HNC cohort and HER3-PI3K/mTOR signaling in that cohort. Material and Methods: 106 HNC patients received definitive treatment with radiation and cisplatin (n=70) or anti-EGFR monoclonal antibody (n=36). 84 patients had tissue available for HPV analysis, and 46 for the biomarker study. Outcomes were analyzed by the Kaplan-Meier method, Cox model and competing risks analysis tools. Results: The strongest factor influencing clinical outcome was the concomitant systemic treatment administered, with significant differences in all the endpoints evaluated (loco-regional failure, progression-free survival, overall survival, specific survival). While cisplatin obtained similar outcomes to those in other series, results with anti-EGFR were clearly inferior. This adds to evidence that anti-EGFR contribute to loco-regional failure (LRF), being LRF the main cause of distant failure. Key characteristics in this sample were: mostly HPV-negative tumors, moderate number of oropharynx cancers, and major presence of T4 tumors and smokers. With regard to biomarkers, PI3K/mTOR signaling is active and confers worse prognosis; pS6 (downstream of this pathway) may indicate an active signaling state; low presence of PIK3CA mutations (being most HPV-negative); potential role of HER3 as a compensatory mechanism; and p53 dysfunction. Conclusions: Radiation and cisplatin achieved better outcomes in this study, being suboptimal and in a predominantly HPV-negative sample. Aditional efforts are needed to best integrate anti-EGFR agents in HNC. Exploratory analyses suggest that mTOR and HER3 blockade may positively affect clinical outcome in HPV-negative HNC.
Valls, Ontañón Adaia. "Virus papil·loma humà en el carcinoma de cap i coll." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/145401.
Full textHead and Neck Squamous Cell Carcinoma (HNSCC) is a malignancy derived from squamous epithelium and is characterized by its multifactorial etiology. Although tobacco and alcohol are the most common risk factors, it is now also accepted the relationship between human papilloma virus (HPV) and HNSCC. Its true impact is still under study; its incidence, prognosis and therapeutic implications are still in dispute. Therefore, we have developed this study to demonstrate the relationship between HPV and HNSCC, which assesses 156 patients treated in the Head and Neck Oncology Unit at the Vall d'Hebron Hospital from November 2009 to December 2010. We collected epidemiological, clinical and histological data of each patient. Patients were grouped according to the result to HPV, and then both groups were statistically compared. It has been shown that HNSCC HPV + are more frequent in the oropharynx, men have a higher incidence of these tumours, patients are younger and usually less smokers and / or drinkers, they have a higher cervical lymph node stage (N2) and patients with positive p16 staining have better prognosis. In conclusion, our study indicates an epidemiological link between HPV and HNSCC. Furthermore, +HPV patient’s profile differs from the classical profile of the smoker and / or drinker patient. From the study, we suggest a HPV detection protocol for patients diagnosed with HNSCC.
Virós, Porcuna David. "Maneig terapèutic de les àrees ganglionars cervicals en els protocols de conservació d'òrgan en tumors avançats de cap i coll." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/4348.
Full textActualment existeix una manca d'acord en el maneig de les àrees ganglionars cervicals després de tractament de preservació d'òrgan en els pacients amb metàstasis regionals avançades al diagnòstic inicial.
Objectius: Es va realitzar un treball amb dos objectius principals. El primer va ser valorar el millor tractament per a aquests pacients. El segon objectiu va ser l'avaluació de la existència d'una relació entre la resposta ganglionar al tractament i el control local de la malaltia.
Material i mètodes: Per al primer objectiu es va dur a terme una revisió en 657 malalts amb carcinoma escatós de cap i coll i adenopaties al diagnòstic inicial sotmesos a tractament conservador d'òrgan entre 1985 i 2005.
Per al segon objectiu del treball es van revisar 134 pacients amb càncer de cap i coll amb metàstasis cervicals en el moment del diagnòstic sotmesos a seqüència terapèutica de preservació d'òrgan que va incloure buidament cervical i amb resposta completa a nivell local a la fi del tractament.
Resultats: La supervivència lliure de malaltia regional als 5 anys pels pacients tractats únicament amb radioteràpia va ser del 63.1% i pels pacients que van seguir tractament ganglionar amb cirurgia i radioteràpia del 69.1%, tot i que aquest últim grup inicialment presenta un pitjor pronòstic. La presència de metàstasis regionals avançades al diagnòstic, la no resposta completa a la quimioteràpia d'inducció, i la no inclusió de cirurgia en el protocol de tractament van actuar com a factors de risc independents per a la recidiva regional de la malaltia.
La presència de restes tumorals en el buidament cervical post tractament conservador es va mostrar com a factor de risc per a la presència de recidiva local, i va donar un empitjorament en la supervivència als 5 anys.
Conclusions: En els malalts amb metàstasis regionals avançades el tractament amb millors resultats en el control regional inclou la realització de cirurgia ganglionar. La presència de restes tumorals a nivell regional influeix en el control local de la malaltia.
Introduction: Organ preservation protocols for the treatment of many head and neck cancers have two main objectives: to treat the disease and to avoid surgical excision of the affected organ. However, there is no consensus concerning management of cervical node metastases following conservative treatment in patients with advanced regional metastases at diagnosis.
Objectives: The present study had two main objectives. The first was to evaluate the best treatment for these patients, and the second was to determine the relationship between response to treatment and local control of the pathology.
Methods: For the first objective we reviewed 657 head and neck cancer patients who had cervical metastases at time of diagnosis and were treated with an organ preservation protocol between 1985 and 2005.
For the second objective we reviewed 134 head and neck cancer patients with cervical metastases at time of diagnosis who were treated with an organ preservation protocol and had complete local response and neck disection after the non-surgical treatment.
Results: Regional relapse-free survival at 5 years for radiotherapy only patients was 63.1%, and for the radiotherapy plus surgery patients it was 69. 1. The second group was diagnosed with more advanced regional pathology, so their initial prognosis was worse than in the first group. Advanced regional metastases, non-complete chemotherapy response and no neck dissection were independent risk factors for regional relapse.
The finding of cancer cells in the neck dissection analysis was a risk factor for local relapse. These patients had a worse 5-year survival than patients without cancer cells in the neck nodes.
Conclusions: Patients with advanced regional metastases had better regional control with neck dissection plus radiotherapy than patients with radiotherapy alone. Cancer cells in the neck dissection after preservation protocol influenced local control of head and neck cancers.
Martrat, Sànchez Griselda. "Cap a un model complet de la xarxa molecular alterada en l’anèmia de Fanconi i el càncer de mama." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/80812.
Full textTowards a full model of the molecular network altered in Fanconi anemia and breast cancer Proteins encoded by Fanconi anemia (FA) and/or breast cancer (BrCa) susceptibility genes cooperate in a common DNA damage repair signaling pathway. There are fiveteen FA complementation groups (FANCs) that encode for proteins of this pathway and three of these genes overlap between FA and BrCa. With the objective to gain deeper insight into this pathway and its influence on cancer risk, we search for novel components through protein physical interaction screens. Protein physical interactions were screened using the yeast two-hybrid system (Y2H). Novel interactions were validated through co-immunoprecipitation and co-affinity purification assays. A previously identified co-purifying protein with PALB2 was indentified MRG15 (MORF4L4 gene). Biochemical and functional assays were performed to characterize the molecular interaction in human, mouse and Caenorhabditis elegans. Results obtanined draw molecular and functional relationships with BRCA2, RAD51 and RPA that suggest a role for MRG15 in the repair of DNA double-strand breaks. Mrg15 deficient murine embryonic fibroblast showed intermediate sensitivity to γ-radiation relative to controls and impaired Rad51 foci formation. No alterations or mutations were identified for MORF4L1 in unclassified FA patients and BrCa familial cases. However, a potential modifier effect for a common genetic variation in MORF4L1 can not be ruled out among BRCA2 mutation carriers.
Mazarico, Gallego Edurne. "Relación existente entre la infección por los diferentes genotipos del Virus del Papiloma Humano y la presencia de patología premaligna y maligna del cuello uterino." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/91065.
Full text1) Introduction Human papillomavirus (HPV) is one of the main risk factors for invasive cervical cancer. The genotypes involved most frequently are related with HPV 16 and HPV 18 and are associated with approximately 70% of all cancers of the cervix. However, other HPV genotypes also play an important role in cervical pathology and cervical cancer and their distribution appears to vary depending on age and region. 2) Objective To document the prevalence of different human papillomavirus (HPV) genotypes in our population. 3) Material and Methods Prospective, cross-sectional descriptive study. A total of 1007 patients were recruited among those seen at the cervical pathology clinic of Sant Joan de Déu University Hospital in Barcelona (Spain) between January 2003 and March 2011. 4) Results Most patients (73.2%) had HPV infection, and among these women the genotype was considered high-risk in 86.4%. The most frequent genotype was HPV 16, found in 31% of the patients. Other genotypes identified, in decreasing order of frequency (all <10%), were HPV 51, HPV 53, HPV 31, HPV 66, HPV 58, HPV 33 and HPV 18. Mean age of the patients with HPV infection was 32.3 years, versus 39.8 years in women without HPV infection (p<0.05). The prevalence of HPV infection was significantly higher among women with grade 2 or 3 cervical intraepithelial neoplasia (CIN 2/3) (86%) or carcinoma (87%) than in women with grade 1 cervical intraepithelial neoplasia (CIN 1) (64%), HPV-associated changes (50%) or atypical cells (40%). 5) Discussion Knowledge about the incidence of the different HPV genotypes is needed for an appropriate focus on preventive, diagnostic and therapeutic measures. As in the present study, genotype HPV 16 was found to be the most frequent worldwide except in Eastern Africa, Japan and Taiwan, where the prevalence of HPV 52 is high. The second most frequent genotype worldwide is HPV 18, according to earlier reports. However, in our study population the incidence of HPV 18 was 5.4%, behind HPV 51 (8.9%), HPV 53 (8.3%) and HPV 31 (7.3%). These findings are consistent with other studies in Spain and Italy, and the geographical variations make it necessary to establish the true risk associated with genotypes HPV 51 and HPV 53, given that their prevalence is non-negligible.
Rodríguez, Trujillo Adriano. "Utilidad de la determinación VPH, genotipado y tinción dual p16/Ki67 en la prevención secundaria del cáncer de cuello de útero." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/663908.
Full textHuman papilloma virus (HPV)-based screening provides greater protection against cervical cancer (CC) than cytology-based strategies. However, HPV tests present lower specificity to detection high-grade squamous intraepithelial lesion or CC (HSIL/CIN2+), which means following many women without infections/lesions with risk of progression to cancer. Therefore, it is necessary to: 1) choose an HPV test that demonstrates the best sensitivity and specificity profile and 2) identify useful molecular biomarkers in the selection of HPV-positive women with risk of developing HSIL/CIN2+. In the first study, we analyzed 5 HPV testing and genotyping techniques (Hybrid Capture 2 [HC2], AnyplexTMII HPV28, Linear Array, GP5+/6+ PCR-EIA-RH and CLART2 in 295 women referred to colposcopy due to an altered screening test. DNA extraction for HPV genotyping was performed in cervical sample specimens after Pap test and HPV detection by HC2. We included women with an adequate cervical sampling with sufficient material for the Pap test and HPV detection and genotyping and those with at least one colposcopically-directed biopsy and/or endocervical curettage. HC2 showed the highest sensitivity for HSIL/CIN2+ detection (96.1%), but all the HPV genotyping tests showed a higher specificity (76.5%-86.8%). The agreement between HC2 results and the other techniques was similar. HPV16/18 infection was a risk factor for underlying HSIL/CIN2+. Anyplex showed the highest risk of underlying HSIL/CIN2+ after positive HPV16/18 tests (OR 31.1; 95% IC 12.1-80.0). In the second study we assessed the prognostic value HPV16/18 genotyping and p16/Ki67 dual staining cytology in HPV-positive women with no lesion or minor abnormalities. We evaluated progression HSIL/CIN2+, persistence/regression of HPV infection in 200 women referred to our unit showing HPV infection, histology diagnosis different from HSIL/CIN2+ and negative cytology. HPV genotyping and dual staining were performed in liquid-based cytological specimens obtained on the first visit. Progression was observed in 8% of the women. Those with HPV16/18 infection had an increased risk of progression compared with women infected by other HPV types and they also showed more persistence. However, no association was observed between progression or persistence and the result of the dual staining. In conclusion, the HPV tests evaluated yield very high concordance and showed a similar clinical sensitivity and specificity for HSIL/CIN2+ detection. Moreover, HPV 16/18-positive women with no lesion or minor abnormalities are at high risk of progression to HSIL/CIN2+ and HPV persistence.
Pino, Saladrigues Marta del. "Marcadors de progressió/regressió de les lesions premalignes de baix grau del cèrvix uterí." Doctoral thesis, Universitat de Barcelona, 2009. http://hdl.handle.net/10803/665323.
Full textCervical cytology, the corner stone of cervical cancer (CC) screening has a low sensitivity for the detection of premalignant cervical lesions and CC (HSIL/CIN2+). Moreover, cervical cytology detects a large number of minor abnormalities (ASC-US or LSIL) which have low risk of progression to HSIL/CIN2+, but that will need follow-up after detection. This second problem becomes worse when apply molecular techniques for detection of human papilloma virus (HPV), the causative agent of CC. HPV tests have shown high sensitivity for the detection of HSIL/CIN2+. However, these techniques are positive in a high percentage of women with ASC-US or LSIL, and also in a large number of women with normal cytology. There is little evidence about the real risk of malignant transformation of these women. Currently, there are no methods to identify which of them will progress to HSIL/CIN2+. As a result a large number of women at low risk of CC need to be followed, which represents a serious problem for the public health system. Recently, it has been observed that p16INK4a, a human protein regulating the cell cycle, is overexpressed in some HPV-related lesions. p16INK4a expression, easily identifiable by immunohistochemistry, indicates interaction of the virus with the cell cycle. Its expression is consistently intense in HSIL/CIN2+ but it is very variable in low grade lesions. Based on these premises, this thesis presents the following hypotheses: 1.women with normal cytology and HPV infection have similar risk of progression than women with ASC-US or LSIL 2.p16INK4a overexpression could be useful in the identification of HSIL/CIN2+ and, given that it reflects the interaction of HPV with the cell cycle, it might identify lesions at higher risk of progression. The studies of the present thesis show that women with a normal Pap smear have a risk of progression identical to the patients with ASC-US or LSIL. Moreover, we also show that the addition of p16INK4a staining to the histological diagnosis of cervical biopsies would avoid the infradiagnosis of HSIL/CIN2+. And, finally we show that p16INK4a staining has a prognostic value and may identify low grade cervical lesions at risk of progression to HSIL/CIN2+.
Roura, Fornells Esther. "Cervical cancer and pre-cancer in the EPIC cohort: the role of environmental cofactors = El càncer de coll uterí i els seus precursos en la cohort EPIC: el rol dels cofactors ambientals." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/665416.
Full textL’objectiu d’aquesta tesi és estimar prospectivament les associacions entre els cofactors ambientals i el risc de desenvolupar un càncer cervical invasor (ICC) o pre-invasor (CIN3/CIS) utilitzant les dades de l’estudi EPIC (European Prospective Investigation into Cancer and Nutrition). Hem seguit una cohort de 308.036 dones durant un període mitjà de 9 anys, identificant 261 casos de ICC i 804 casos de CIN3/CIS, i hem realitzat un estudi de casos i controls aniuat dins la cohort, incloent sèrums de 184 casos invasors, 425 CIN3/CIS i 1.218 controls aparellats, testant anticossos del Virus del Papil·loma Humà (VPH), la Chlamydia trachomatis (CT) i el Herpesvirus Humà tipus 2 (HHV-2). Els principals resultats han determinat que la seropositivitat per la proteïna L1 a qualsevol tipus del VPH mucós està associat a CIN3/CIS i ICC. En canvi les associacions per les oncoproteïnes E6 i E7 dels tipus del VPH 16 i 18 només han estat significatives pel càncer invasor, destacant la del VPH 16 E6 (OR=10.2). L'exposició passada a CT, i en menor mesura a HHV-2, s’ha vist associada a un major risc de desenvolupar un càncer invasor o pre-invasor. Les dones fumadores tenen el doble de risc de desenvolupar un CIN3/CIS o ICC en comparació amb les dones que no han fumat mai, risc que augmenta amb la duració i intensitat d’ús; en canvi el fet de deixar de fumar s’ha associat a una reducció del risc a la meitat. Un major nombre d’embarassos s’ha associat a un augment en el risc de tenir un CIN3/CIS. La durada en l'ús d’anticonceptius orals s’ha associat a un risc significativament major de desenvolupar un CIN3/CIS o ICC, mentre que deixar d’utilitzar-los durant com a mínim 5 anys redueix el risc de CIN3/CIS a gairebé la meitat. L'ús de teràpia hormonal substitutiva s’ha associat a un menor risc de patir un càncer cervical invasor, en canvi no s’ha trobat cap associació significativa entre l'ús de dispositius intrauterins i el càncer cervical. Aquesta cohort prospectiva confirma el rol del tabac, i en menor mesura dels factors hormonals i reproductius i de les infeccions per CT i HHV-2, com a cofactors del càncer de coll uterí.
Acera, Pérez Amèlia. "Evaluación de tres estrategias para la captación de mujeres con cribado incorrecto de cáncer de cérvix: Estudio CRICERVA." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/398960.
Full textRegular screening for cervical cancer has proven to reduce the incidence and the mortality from this disease. The objective of this study was to improve the participation and the coverage of the screening for cervical cancer in women from 30 to 70 years, to evaluate the impact in the coverage and to know the characteristics (place and periodicity) of it, after the women that in our database had no screening or were poorly screened received one personalized invitation, of three different kinds. Methods The CRICERVA study is a cluster clinical trial targeted to women from 30 to 70 years of age that were registered, in December 2010, in the Primary Health Care Service (SAP) Cerdanyola area in Barcelona. A total of 32,858 women were registered and had an assigned doctor in one of the ABS (Public Health Care) within the study area (checked from the Register on December 2010). After this, the screening registers were extracted from the clinical history of each woman, and all the women with no record of cervical cytology during the previous 3.5 years were identified, making a total of 15,965 women. These women were randomly assigned to one of four different clusters. The first one (GI1) consisted of a personalized invitation letter to participate in the screening program. The women in the second cluster (GI2) received the invitation plus an informative leaflet. The third cluster (GI3) also received a personalized phone call. Finally, the cluster with no intervention (GNI) was used as a control group, and was based on spontaneous demand. From the 15,965 women, 13,886 were assigned to one of the Intervention Groups (GI) and 2,079 to the No Intervention Group (GNI). Out of these 13,886, it was not possible to contact with 4,263 women, and 4,263 didn’t need screening. The remaining 5,341 were rescued with an insufficient screening. The protocol about the cervical cancer screening of the Departament de Salut de la Generalitat de Catalunya was applied to these final women, and it was complemented with an HPV test if indicated. An analysis of costs of intervention versus increase of coverage was made. A personalized interview offered to all women that participated in the Intervention Groups during the visit, and also to women in the No Intervention Group, but after the study was complete. The last screening visit was performed in December 2013. Statistical Analysis The coverage in every group was estimated as the proportion of women that were correctly screened at the end over all the women susceptible of being screened. It is considered as final coverage the one reached in the total period of 4 years. The qualitative variables are described with absolute frequency and percent value. The quantitative variables, however, are expressed with averages and standard deviations. The Chi Squared test was used in the comparison of qualitative variables, and the Analysis of Variance for the analysis of quantitative variables. The comparison between groups was performed by Chi Squared Distributions, and it was considered that a difference was statistically significant when the p-Value was lower than 0.05. The Confidence Intervals are of the 95%. The analyses were performed with the software Statistical SPSS for Windows, v.20.0. Results From all women initially registered with a poor screening, a 20.6% went to Private Health Care regularly, and a 10.2% did not need active following. The cervical screening coverage for the Cerdanyola SAP after the CRICERVA study in the intervention groups was estimated to be at 84%, which represents an increase of the 31% from the baseline coverage. The highest coverage was registered within women with less than 40 years (95.2%) and the lowest in women older than 60 years (64.3%). The strategy that obtained the highest coverage was the GI3 group for all ages. In the analysis by age it was also observed that the coverage before and after the study were higher with women younger than 40 years. The coverage of the control group (GNI) increased in a 9% during the study. The analyses of the personalized interviews show that approximately a 30% of women with screening records went to Private Health Care. The women with the highest educative and economic level are those who mostly go to Private Health Care. The lack of information about the importance of the detection was the most important factor for not following the screening recommendation. The study identified in 2,500 women with criteria of insufficient screening: 18 CIN2, 10 CIN3 and 4 cases of invasive cervical cancer. The economic evaluation of the interventions estimated that the implementation of sending a letter would cost an average of 490€ per thousand women. Conclusions * The CRICERVA study has estimated the population coverage of cervical cancer screening in the Cerdanyola SAP with a mixt approach, which includes the analysis of the electronic clinical history, personalized interviews and a gynecological visit in the frame of a randomized test of intervention. * The analysis of the clinical history and the personalized interviews show that a 34% of the women of the Cerdanyola SAP had a poor screening compared to the Departament de Salut recommendations. * The intervention strategy that obtained the highest coverage included a personalized invitation letter, an informative leaflet and a phone call three days before the visit. * In a population like Catalonia’s, with approximately 40% of women between 30 and 70 years with poor screening, the implementation of the first intervention strategy (sending a letter) would cost 490€ per thousand women. * The CRICERVA Study results are informative; to ease the implementation of efficient strategies that allow a transition from opportunistic screening to planned population strategies. * The clinical history analysis performed in the CRICERVA Study has allowed eliminating a considerable proportion of errors in the register, which would point to the necessity to regularly check the validaty of the clinical electronic medical records to improve the quality of these registering systems.
Guix, Arnau Marta 1974. "Mechanisms of acquired resistance to anti-EGFR therapies in squamous cell carcinoma." Doctoral thesis, Universitat Pompeu Fabra, 2017. http://hdl.handle.net/10803/565440.
Full textEls tractaments dirigits contra el receptor del factor de creixement epidèrmic (EGFR) són útils en diversos càncers en l’home, com el càncer de pulmó de cèl·lula no petita, el càncer colorrectal o els tumors de cap i coll. Però l’eficàcia d’aquests tractaments sempre està limitada per l’aparició de resistències. Aquesta tesi doctoral s’ha centrat en investigar els mecanismes de resistència adquirida a tractaments dirigits contra l’EGFR (com els inhibidors tirosina quinasa gefitinib i erlotinib o l’anticòs monoclonal cetuximab) en carcinomes escamosos. En la primera part de la tesi s’han desenvolupat estudis preclínics amb models cel·lulars i xenoinjerts per desxifrar els mecanismes moleculars de resistència; la segona part de la tesi ha inclòs estudis en mostres de carcinomes escatosos de cap i coll de pacients amb tumors avançats. La troballa principal dels estudis preclínics ha estat que l’activació del sistema del receptor del factor de creixement semblant a la insulina, principalment a través de la disminució dels nivells de les proteïnes d’unió als factors de creixement semblants a la insulina, és la responsable de l’aparició de resistència adquirida als tractaments anti-EGFR. Posteriorment, però, aquests resultats no han estat validats en una petita cohort de pacients amb tumors avançats de cap i coll.
Mesia, Nin Ricard. "Introducción de Cetuximab en el tratamiento del carcinoma escamoso de cabeza y cuello." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/291437.
Full textThis thesis deals on the clinical development of the monoclonal antibody Cetuximab for the treatment of squamous cell carcinoma of head and neck, at different stages of the disease. In metastatic/recurrent disease, there has been a phase III study that compared in 1st line treatment a combination of chemotherapy alone (schema with Platinum and 5-FU) with the same scheme of chemotherapy associated with Cetuximab (schema EXTREME). The conclusions have been: 1. In comparison with the Platinum/fluorouracil, the same combination with cetuximab significantly improves overall survival. 2. All other parameters of efficacy (progression free survival,best overall response, control of the disease) also favored the combination with cetuximab. 3. EXTREME toxicities of cetuximab added: skin, infusionales and hipomagnesisemia. 4. The addition of cetuximab to the chemotherapy with Platinum/fluorouracil form does not affect adversely the quality of life of patients with recurrent/metastatic disease. 5. EGFR copy number is not a predictive biomarker of the efficacy of the combination of cetuximab, Platinum and FU in recurrent/metastatic disease. The second study in locally advanced disease, specifically in oropharyngeal cancer and was a randomized phase II study that evaluated the efficacy and the toxicity of the addition of 12 weeks of adjuvant treatment with Cetuximab weekly once completed a concomitant treatment with radiotherapy and cetuximab. Although a year locoregional control was a 12% higher in the branch of adjuvant cetuximab, there were no differences in any parameter of efficiency from the second year. Therefore the conclusion was, twelve weeks of adjuvant treatment with cetuximab after radical treatment with RT + cetuximab is possible and secure, and improves the control of the disease at the end of the treatment, and first-year locoregional control. However, the blockade of EGFR during 12 weeks alone is not enough to eliminate minimal residual disease after radical treatment and therefore is not able to maintain greater control over time, with increased loco-regional recurrences in the second year of follow-up, and no impact on survival.
Sumarroca, Trouboul Anna. "Capacidad pronóstica de la expresión de la mieloperoxidasa en los pacientes con carcinomas escamosos de cabeza y cuello." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/665517.
Full textTumor-associate neutrophils (TAN) represent a significant portion of the inflammatory cell infiltrate in head and neck carcinoma (HNSCC). Several studies have shown a significant association between TAN and poor clinical outcome in HNSCC patients. Myeloperoxidase (MPO) is a peroxidase enzyme expressed in TAN. MPO expression could be a biomarker for the identification and quantification of TAN. The objective of our study was to evaluate the transcriptional expression of MPO in HNSCC tumors, and to evaluate the relationship between MPO expression and the appearance of distant metastasis. We used RT-PCR to determine mRNA expression levels of MPO in 160 consecutive patients with HNSCC treated between 2004-2010. Continuous values of mRNA expression were analyzed using a classification and regression tree (CART) method considering the appearance of distant metastases as the dependent variable. During the follow-up period, 22 patients (13.7%) presented with distant metastases. mRNA expression level of MPO for patients with distant metastases was significantly higher than for patients without (P = 0.001). The CART method classified patients in two categories: high (n = 60, 37.5%) or low (n = 100, 62.5%) expression level of MPO. The 5-year distant metastasis free survival was 65.2% for MPO high-expression level and 95.7% for MPO low-expression level (P < 0.001) patients. Considering patients with a low MPO expression as the reference group, patients with a high MPO expression had a 7.7 fold higher risk of appearance of distant metastases (CI 95%: 2.55-23.24). Patients with high risk of distant based on clinical and pathological variables, including patients with locally advanced tumors (cT3-T4), with advanced regional lymph nodes (cN2-N3), or with neck node metastases with extracapsular spread, who had a high MPO expression (n = 42) had a 5-year distant metastasis free survival of 57.4%. Patients with lymph nodes with extracapsular rupture tended to have higher levels of transcriptional expression of MPO. Elevated expression of mRNA MPO in the tumor was associated with expression of genes involved in the dissemination process (prostaglandin synthetase, thromboxane, CD45, RANTES, metalloproteinases, superoxide dismutases...). The tumors of patients who presented distant metastases had a significantly higher level of MPO by immunohistochemistry than patients who did not suffer the appearance of distant metastases. The concentration of MPO in secretoma or serum was not related to the appearance of distant metastasis. The conditioning agents of the activated PMN did not promote the cell migration. The main conclusion of this thesis is that we found a significant relationship between mRNA MPO expression level and the appearance of distant metastases in HNSCC patients. The combination of clinical-pathological data with the MPO expression can be used to identify patients with a high risk of distant metastases.
Semidey, Raven María Eugenia. "Evaluación de factores moleculares asociados a la respuesta a cetuximab: integración con tratamientos de radioterapia y quimioterapia en carcinoma escamoso de cabeza y cuello." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/386551.
Full textHead and neck squamous cell carcinoma (HNSCC) is a frequent disease of difficult therapeutic management. It occupies the sixth position in national cancer incidence (4,3%) with 37% of mortality. The treatment of the locally advanced cases is based in the combination of radiotherapy (RT) and chemotherapy (CT) with anti-EGFR monoclonal antibodies like Cetuximab. The alterations in the factors that participate in the EGFR dependent cancer pathways like PI3K/AKT/mTOR and RAS/RAF/MAPK can lead to increased sensibility or resistance to the treatment, affecting the prognosis of the disease. In our study, we determined the relationship between the expression of the proteins of the EGFR signalling pathways and its mutations, and the response to the treatment with chemotherapy or radiotherapy in combination with cetuximab in HNSCC. We studied the proteins mTOR, 4EBP1 y eIF4E and its phosphorylated counterparts, PTEN, pS6, pMAPK and HER3 by immunohistochemistry, the suppresor factors p53, p16 and the Ki67 cellular proliferation index. Likewise, the mutations of the proteins involved in carcinogenesis (PI3K, B-RAF , KRAS y H-RAS) were detected as well as the presence of HPV. In the statistical analysis Roc curves were done to determine the point with more sensitivity and specificity to a worse prognosis in all the proteins studied. Global and disease-free survivals were analyzed through Kaplan-Meier curves. Multivariate logistic regression analysis was done to determine the variables associated, independently, with a worse prognosis. We included 90 patients diagnosed with HNSCC with a median age of 59,7 ± 10,9 years and more frequency of males (86,67%). Three branches were stablished according to the treatment received either RT associated with Cetuximab (23,33%), CT associated with Cetuximab (27,78%) and CT/RT (48,89%). The disease-free survival median was of 48,5 weeks (30-95,75) and global survival was 88 (51-135,75) weeks. We observed a lower disease-free survival in those tumors expressing mTOR >125 (HR 2,05;p=<0,01) and eIF4E >115 (HR 1,67;p=0,04), being independent factors of worse prognosis the expression of mTOR, pmTOR and the presence of lymph nodes metastases. On the other hand, there was a lower global survival in those tumors expressing mTOR>125 (HR: 1,88,p=0,01), pMAPK (HR 1,50;p=0,008) and patients with lymph node metastases 92 vs 215w, p=0.004, being independent factors of worse prognosis the expression of mTOR and the presence of lymph node metastases. We observed a lower global and disease-free survival time in those patients with tumors expressing pMAPK with HR 7,15 (2,20-23,18) and HR 3,42 (1,15-10,15), respectively, in the branch who received CT plus cetuximab. There was a better disease-free survival in the cases p16 positives (HR 0,53; 0,23-1,24) and a better global survival (HR 0,37; 0,13-1,04), being an independent factor of better prognosis. In conclusion, the combination of inhibitors of mTOR may have a sinergistic effect with the anti-EGFR treatment in HNSCC. The resistance mechanisms towards cetuximab are in relation with the persistance in the activation of the different proteins constitutives of the carcinogenesis pathways like mTOR and pMAPK, both EGFR dependents.
Costa, González José Miguel. "Impacto del carcinoma de cabeza y cuello en la actividad laboral de los pacientes." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/458633.
Full textIntroduction The goal of cancer treatment is not only to cure the patient, but also to achieve the best possible quality of life. Maintaining employment is important for patients who have survived cancer treatment for reasons such as financial status, quality of life and self-esteem. Head and neck carcinomas (HNC) are tumors that, due to their location, affect important elements involved in communication and social relations, such as articulation of speech and swallowing, as well as aesthetic impairment due to their high visibility. Hypothesis and objectives There are a number of variables that can influence the possibilities of return to work after treatment in patients with HNC. As concrete objectives we set ourselves: 1. - To quantify the percentage of patients with HNC who were laboriously active at the time of diagnosis of the disease. 2. - To evaluate the percentage of active labor patients at the time of diagnosis of the tumor who maintained a work activity at 6 months and 2 years after completing cancer treatment. 3. - Analyze the variables related to the maintenance of work activity after treatment in patients with HNC. 4. - To examine the relationship between the type of treatment and the maintenance of work activity in patients with locally advanced carcinomas of the larynx. 5. - To assess the relationship between the type of phonatory rehabilitation and the maintenance of work activity in patients with laryngeal carcinomas treated with a total laryngectomy. Material and methods A cross-sectional study was carried out on a sample of patients with HNC who went consecutively to control in our center throughout 2014. Labor status in these patients was independently assessed for each tumor. The study included 604 malignant head and neck tumors corresponding to a total of 532 patients. Results 1. - At the time of diagnosis of HNC, 57% of the patients had an active job, 2% were unemployed, 8.5% had some type of occupational disability, and 32.5% were retired. 2. - Considering patients under 65 years and potentially active at the time of diagnosis of the disease, the percentage of patients who remained active at 6 months was 66.7%, and at 2 years 63.6%. 3. - According to the results of a multivariate study, the variables that were related to the maintenance of work activity after treatment were: intensity of toxic consumption (tobacco and alcohol) prior to treatment, type of use, tumor extension, and whether the patient had received surgical treatment on the primary location of the tumor. 4. - The percentage of patients who were active at work 2 years after a total laryngectomy was 50%, while for patients who achieved organ preservation was 76.2%. 5. - According to the results of a multivariate study, patients with phonatory prostheses had a 3.5 times greater probability of maintaining at 2 years a work activity than those patients without prostheses. Conclusions Toxic consumption, type of employment, tumor extension and surgical treatment on the primary location influenced the possibilities of return to work. Phonatory rehabilitation method had a significant influence on the possibilities of maintaining work activity in laryngectomized patients.
Valero, Mayor Cristina. "Capacidad pronóstica de los parámetros hematológicos en sangre periférica pre-tratamiento en los carcinomas escamosos de cabeza y cuello." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/662610.
Full textBackground. Multiple studies link carcinogenesis and inflammation in both ways. On one hand, chronic inflammation promotes tumor development, and on the other hand, most tumors show an infiltrate of cells related to the inflammatory response that stimulate tumor progression. Moreover, the failure of the immune system to control and eradicate tumor cells could be partly responsible for the tumor progression. The degree of systemic inflammation correlates with the oncologic outcome in some tumor models. Studies carried out in different solid tumors have associated a decrease in disease control and survival with the increase of the circulating counts of neutrophils and monocytes, the decrease of lymphocytes, and an elevated ratio between neutrophils and lymphocytes (NLR). Objectives. The objective of the present study is to assess the prognostic capacity of the pre-treatment count of neutrophils, monocytes, lymphocytes and NLR in peripheral blood in a large series of patients with squamous cell carcinomas of the head and neck (HNSCC) treated consecutively in a single institution. In addition, the cohort of patients with oropharyngeal tumors was analyzed separately according to the status of the Human Papillomavirus (HPV). Materials and Methods. The clinical data used in this study were obtained retrospectively from a database that prospectively collects epidemiological, treatment and follow-up data of patients with HNSCC treated in our institution from 1985. We included 824 patients with an anatomopathological result of squamous cell carcinoma of the oral cavity, oropharynx, larynx or hypopharynx diagnosed in our center between January 2000 and December 2012 with a minimum follow-up of 2 years. We only included patients for whom we obtained the hematological parameters within 4 weeks prior to the start of treatment. The disease-specific survival and the local, regional and distant disease-free survival were analyzed according to the count of neutrophils, monocytes, lymphocytes and NLR. Results. We observed an ordered decrease in disease-specific survival as the quartile category of neutrophils, monocytes, and NLR increased. In the case of lymphocytes, only patients in the lowest quartile showed a poorer disease-specific survival. Considering the disease-specific survival as the dependent variable, a recursive partitioning analysis (RPA) classified the patients according to the neutrophil and monocyte counts. The 5-year disease-specific survival for the first node (Neutrophils <4.80x109/L - Monocytes <0.52x109/L) was 83.9%, for the second node (Neutrophils <4.80x109/L – Monocytes >0.52x109/L) it was 73.1%, for the third node (Neutrophils between 4.80-7.99x109/L) it was 61.4%, and for the fourth node (Neutrophils >7.99x109/L) it was 47.4%. When analyzing patients with oropharyngeal tumors according to HPV status, patients with HPV positive tumors had significantly lower neutrophil and monocyte counts and NLR than patients with HPV negative tumors. No differences in lymphocyte counts were found. Conclusions. A high pre-treatment count of neutrophils and monocytes and an elevated NLR, analyzed in peripheral blood, were independently associated with a worse prognosis in patients with HNSCC when analyzing the disease-specific survival and the local, regional and distant disease-free survival. The lymphocytes did not show prognostic capacity. We considered that the prognostic capacity of the NLR, basically depended on the neutrophil count. A classification of the patients according to neutrophil and monocyte counts could be considered a useful biomarker of survival in patients with HNSCC.
Lop, Gros Joan. "Análisis de la supervivencia competitiva en pacientes con carcinoma escamoso de cabeza y cuello." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666006.
Full textHead and neck cancer patients are at high risk of competing mortality because of shared risk factors (alcohol and tobacco) between the index tumor, second primary cancers and other comorbidities. Competing risks survival analysis allows simultaneous estimation of the cumulative incidence of different final events, providing net estimation of mortality by different causes. Patients that survive a number of years after tumor diagnosis experience an improvement in the chance of survival. Such an improvement may be estimated by dynamic survival study using conditional survival analysis. A competing survival analysis was performed on 4,283 patients with head and neck squamous cell carcinoma selected from a tertiary center oncologic database with a minimum follow-up of one year. Index tumor related mortality, second primary cancer mortality and non-cancer related mortality cumulative incidences were estimated depending on covariates sex, age, stage, Karnofsky, treatment modality, index tumor location and substance abuse. A Fine-Gray multivariate analysis was used to assess the impact of these covariates on each group of mortality. VPH status impact on competing survival on patients with oropharynx carcinomas was assessed as well. Finally, conditional global and specific survival on the whole cohort was estimated. Index tumor related mortality followed an asymptotic pattern, with a 5 and 25 year cumulative incidence of 30.6% and 32.8% respectively. Second primary head neck and non-head and neck cancer mortality and non-cancer related mortality followed a linear pattern, increasing 0.5% per year. Multivariate analysis showed that index tumor mortality was significantly related with all the covariates included except for sex and substance abuse. Second primary head and neck cancer mortality was related with stage, location, age and substance abuse. Second primary non-head and neck cancer mortality was related with index tumor location, age, stage and substance abuse. Non-cancer related mortality was related with all covariates included in the study except for the index tumor stage. A strong impact of VPH-status on index tumor related mortality and second cancer mortality was found in oropharynx carcinoma patients, but not for non-cancer related mortality. Conditional specific and global survival analysis showed an improvement on prognosis over the first 3 years after diagnosis. Head and neck cancer patients are at high risk for competing mortality; in this cohort almost half of the deaths were not related with the index tumor. Improvement in specific survival due to new multimodal treatments in head and neck cancer, as well as the increase in morbidity prevalence secondary to population ageing, is leading to a new scenario where competing and conditional mortality assessment is becoming much more relevant.
Diez, Tejerina Santiago. "La expresión del eje CXCL 12/CXCR4 como predictor de la respuesta a nivel regional en pacientes con carcinomas escamosos de cabeza y cuello." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/378021.
Full textPurpose: The CXCL12 / CXCR4 axis is a chemokine system (ligand) and its receptor, which function normally and are necessary for the homeostasis of various body systems. It is suspected that some head and neck carcinomas using this axis to spread to regional lymph from the primary tumor. Few studies have substantiated this pathway as a possible marker to predict the occurrence of lymph node recurrences. We studied the prognostic axis CXCL12 / CXCR4 on possible nodal recurrence in patients treated for HNSCC. Experimental design and results: Healthy and tumor samples from 111 patients with HNSCC (oral cavity, oropharynx, larynx and hypopharynx) and treated with radical intent with minimum follow-up of 3 years were analyzed. The appearance of lymph node recurrence, regional recurrence free survival, local or remote and survival adjusted depending on the expression of CXCL12/CXCR4 axis expression and other inflammatory pathways associated with response to treatment and was rated capacity known spread (COX, NFkB, IL-1, CD-45, MPO, MPC-1, MMP-2 and 9, Hsp-90 and SOD). We found that the expression of CXCL12 was lower and CXCR4 higher in the tumor than in healthy mucosa. Patients were distributed through an analysis method of recursive partitioning, in groups according to the expression of CXCL12 and CXCR4. Patients with low expression of CXCR4 and high CXCR4 and CXCL12 high, had a low risk of tumor recurrence at nodal level, 2.6% and 4.5% respectively. The patient group consisting of high expression of CXCR4 CXCL12 and counted down with a high risk of local relapse, 34.0%. Multivariate analysis calculated a 10.7 times greater risk of regional recurrence in these patients compared to the previous group. All this regardless of the category of initial tumor extension at regional level, the type of treatment performed on nodal areas or local control of the disease. Additionally, a significant correlation between the transcriptional expression of CXCL12 and CXCR4 with PGIS (PGI2), SOD-2 and COX-2, PGIS, VEGF and MMP-2 respectively is shown. Conclusions: CXCL12 expression was significantly lower and upper CXCR4 in tumor samples corresponding to samples of healthy mucosa. Expression levels of CXCL12/CXCR4 not differ depending on the location of the tumor nor HPV status. The low expression of CXCL12 and CXCR4 elevated in patients with HNSCC shows a clear increase in the risk of suffering a relapse during evolution nodal treatment of these patients, decreasing significantly with survival compared to patients with high expression of CXCL12 and high CXCR4 or CXCR4 expression low. There is a correlation between CXCL12/CXCR4 and the expression of various genes related to response to treatment and the ability to spread the HNSCC as PGIS, COX-2, VEGF and MMP-2.