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Academic literature on the topic 'Càncer de cap i coll'
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Journal articles on the topic "Càncer de cap i coll"
Manzano González, Keren. "Review of Porroche-Escudero, Coll-Planas & Riba (Eds.) (2016): Cicatrius (in)visibles. Perspectives feministes sobre el càncer de mama." Quaderns de Psicologia 18, no. 3 (November 30, 2016): 109. http://dx.doi.org/10.5565/rev/qpsicologia.1373.
Full textPalsova, Lucia, and Ondrej Benus. "Enforceability of decisions of the Agricultural Paying Agency in matters of direct payments." Ecocycles 6, no. 2 (November 2020): 13–18. http://dx.doi.org/10.19040/ecocycles.v6i2.169.
Full textSalam, Md Abdus, Md Robed Amin, and Quazi Tarikul Islam. "Clinical Presentation and Bacterial Etiology of Adult Community Acquired Pneumonia." Journal of Bangladesh College of Physicians and Surgeons 34, no. 3 (April 26, 2017): 128–34. http://dx.doi.org/10.3329/jbcps.v34i3.32343.
Full textRahman, Mohammad Mushfiqur, Md Mazedur Rahman, Mamun Ibn Munim, and Md Shariful Haque. "Role of Single Dose Preoperative Ceftriaxone in the Control of Surgical Site Infection in a Tertiary Level Hospital." Faridpur Medical College Journal 11, no. 1 (December 29, 2016): 6–10. http://dx.doi.org/10.3329/fmcj.v11i1.30869.
Full textHalen, Pierre. "CASSIAU-HAURIE (Christophe), éd., Cap sur la capitale [1985]. Scénario et dessin : Tchibemba. Dialogues : Georges Kyungu MB. [Suivi de « Cap sur la BD zaïroise avec Tchibemba » par Christophe Cassiau-Haurie]. Paris : L’Harmattan, coll. L’Harmattan BD, 2017, 47-[9] p. – ISBN 978-2-343-10419-5." Études littéraires africaines, no. 43 (2017): 243. http://dx.doi.org/10.7202/1040965ar.
Full text"Recorregut de recerca geològica i mineralògica per la comarca del Pallars Jussà: des d´Espui, cap al Coll de Triador, l´Estany Gento, l´Estany Tort i cap a Colomines." Xaragall: revista de ciències de la Catalunya central, August 2014. http://dx.doi.org/10.5821/xaragall.8.3712.
Full text"Modificacions al recorregut de recerca geològica i mineralògica per la comarca del Pallars Jussà: des d´Espui, cap al Coll de Triador, la Cambra d´Aigües, l´Estany Gento, l´Estany Tort i cap al Refugi de Colomina." Xaragall: revista de ciències de la Catalunya central, August 2014. http://dx.doi.org/10.5821/xaragall.8.3717.
Full textMata Perelló, Josep Maria. "Recorregut de recerca geològica i mineralògica per les comarques del Bages i del Solsonès: des de Cardona, cap a Solsona, Sant Llorenç de Morunys i el Coll de Port; i des del Coll de Port a Odén i a Cambrils." Algeps: revista de geologia XXXIV, no. 451 (July 2008). http://dx.doi.org/10.5821/algeps.451.3040.
Full textDissertations / Theses on the topic "Càncer de cap i coll"
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+.
Books on the topic "Càncer de cap i coll"
ellas, Alex Rovira Can. Radiologi a de cabeza y cuello. Madrid: Me dica Panamericana, 2009.
Find full textCaballero, Javier. Mar de sardines: Des del Coll de Balaguer la mar salta al sol com un banc de sardines platejades i blaves tancades a l'Almadrava, baix del Cap de Terme. Tarragona: Arola Editors, 2008.
Find full textCaballero, Javier. Mar de sardines: Des del Coll de Balaguer la mar salta al sol com un banc de sardines platejades i blaves tancades a l'Almadrava, baix del Cap de Terme. Tarragona: Arola Editors, 2008.
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