Academic literature on the topic 'Colesteatoma da orelha média'
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Journal articles on the topic "Colesteatoma da orelha média"
Antunes, Marcos Luiz, Yotaka Fukuda, Norma de Oliveira Penido, and Rimarcs Ferreira. "Efeito do ácido trans-retinóico na inibição de colesteatoma em cobaias." Revista Brasileira de Otorrinolaringologia 74, no. 1 (February 2008): 53–60. http://dx.doi.org/10.1590/s0034-72992008000100009.
Full textAzevedo, Alexandre Fernandes de, Daniele Cristine Gomes Pinto, Nicodemos José Alves de Souza, Dirceu Bartolomeu Greco, and Denise Utsch Gonçalves. "Perda auditiva sensório-neural na otite média crônica supurativa em pacientes com e sem colesteatoma." Revista Brasileira de Otorrinolaringologia 73, no. 5 (October 2007): 671–74. http://dx.doi.org/10.1590/s0034-72992007000500013.
Full textRibeiro, Fernando de Andrade Quintanilha, Celina Siqueira Barbosa Pereira, and Renata de Almeida. "Estudo comparativo de aspectos histológicos e imunohistoquímicos entre o colesteatoma espontâneo do meato acústico externo e o colesteatoma adquirido da orelha média." Revista Brasileira de Otorrinolaringologia 70, no. 5 (October 2004): 602–7. http://dx.doi.org/10.1590/s0034-72992004000500005.
Full textAlves, Adriana Leal, and Fernando de Andrade Quintanilha Ribeiro. "O papel das citocinas no colesteatoma adquirido da orelha média: revisão da literatura." Revista Brasileira de Otorrinolaringologia 70, no. 6 (December 2004): 813–18. http://dx.doi.org/10.1590/s0034-72992004000600018.
Full textAlves, Adriana Leal, Celina Siqueira Barbosa Pereira, Fernando de Andrade Quintanilha Ribeiro, and Jose Humberto Tavares Guerreiro Fregnani. "Análise dos padrões histopatológicos do colesteatoma adquirido da orelha média." Revista Brasileira de Otorrinolaringologia 74, no. 6 (December 2008): 835–41. http://dx.doi.org/10.1590/s0034-72992008000600005.
Full textPereira, Celina S. B., Clemente I. R. Almeida, and Maria Regina Vianna. "Imunoexpressão da citoqueratina 16 e do antígeno nuclear Ki-67 no colesteatoma adquirido da orelha média." Revista Brasileira de Otorrinolaringologia 68, no. 4 (August 2002): 453–60. http://dx.doi.org/10.1590/s0034-72992002000400002.
Full textVitale, Rodrigo Faller, and Fernando de Andrade Quintanilha Ribeiro. "O papel do Fator de Necrose Tumoral Alfa (TNF-alfa) no processo de erosão óssea presente no colesteatoma adquirido da orelha média." Revista Brasileira de Otorrinolaringologia 73, no. 1 (February 2007): 123–27. http://dx.doi.org/10.1590/s0034-72992007000100020.
Full textTrani, Tamires de Vecchi, Natália Guerreiro Lyra, and Bruno Pietroluongo. "Colesteatoma em cães: revisão de literatura." Revista de Educação Continuada em Medicina Veterinária e Zootecnia do CRMV-SP 17, no. 1 (May 8, 2019): 8–14. http://dx.doi.org/10.36440/recmvz.v17i1.37838.
Full textPereira, Maria Beatriz Rotta, Denise Rotta Ruttkay Pereira, and Sady Selaimen da Costa. "Seqüelas de tubos de ventilação em crianças com otite média com efusão: um seguimento de três anos." Revista Brasileira de Otorrinolaringologia 71, no. 4 (August 2005): 415–20. http://dx.doi.org/10.1590/s0034-72992005000400003.
Full textBarbosa, Vinicius Cotta, Marco Aurélio Rocha Santos, Helena Maria Gonçalves Becker, and Renata Furletti Diniz. "Osteoma da orelha média." Revista Brasileira de Otorrinolaringologia 73, no. 5 (October 2007): 719. http://dx.doi.org/10.1590/s0034-72992007000500022.
Full textDissertations / Theses on the topic "Colesteatoma da orelha média"
Rosito, Leticia Petersen Schmidt. "Colesteatoma adquirido da orelha média : observações a propósito de 356 pacientes." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/110305.
Full textSilva, Maurício Noschang Lopes da. "Avaliação tomográfica da orelha contralateral de pacientes com otite média crônica severa." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/52952.
Full textIntroduction: Some studies indicate a bilateral tendency of chronic otitis media. It is believed that the contralateral ear (CLE) can provide evidences of the route of formation of ear disease in the major (most affected), be a parameter of Eustachian tube function and predict successful treatment. The CT scan is an excellent test to evaluate the structures of the temporal bone and the changes resulting from otitis media. Objective: To evaluate Temporal Bone Computed Tomography of patients with chronic otitis media and describe changes in the contralateral ear. Methods: Cross-sectional study. Evaluation of CT scans of 75 patients with chronic otitis media from Clinicas Hospital of Porto Alegre by a neuroradiologist. Results: Population was consisted of 50.6% males with a mean age of 36 years. We found 48% of changes in the tympanic membranes of the contralateral ears. About ossicular chain, there was 9.3% of changes in malleus, 10.7% in incus and 25.3% in stapes. Mastoid antrum were veiled on 28%. Conclusions: The prevalence of radiographic changes in the contralateral ears of patients with chronic otitis media corroborates with clinical, histopathological and functional resources that this disease has a bilateral feature.
Dornelles, Cristina de Carvalho. "Colesteatomas adquiridos : análise comparativa da perimatriz entre pacientes pediátricos e adultos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2004. http://hdl.handle.net/10183/6220.
Full textIntroduction: Cholesteatoma may occur either in children or in adults; in children, however, they have a more aggressive and extensive growth. Collagenases may play a role in this set. Objective: To compare, histologically, adults and children's cholesteatomas. Methods: A total of 74 cholesteatomas (35 of children) obtained from othologic surgeries were included. They were fixed in formol 10% and processed by usual histologic techniques. Two laminas were performed for each cholesteatoma, one stained with HE and other with Picrossisius. Images were obtained at the optic microscope and were digitally processed using Image Pro-Plus software. For statistical analysis were used Pearson and Spearman's correlation coefficient, t test and chi square test. The analysis was blind. Differences were considered statistically significant if P<0,05. Results: We obtained 74 cholesteatomas, but 17 (7 pediatrics and 10 adults) were excluded because of the absence of their matrix and perimatrix in the microscopic images. Mean age ± sd was 12,85 ± 3,63 in children and 33,69 ± 13,1 in adults. Histologically, mean number of matrix epithelial cell layers was 8 in both groups. Sixty percent of samples showed a moderate-to-severe inflammation. In the children group, 71,4% of samples contained fibrosis and, between adults, 62,1% contained it; granuloma appears in 10,7% and in 13,8%, respectively. The presence of simple cuboidal epithelium around the perimatrix was found in 29% of children´s and in 14 % of adult´s laminas. No statistical difference was found in these variables between the two groups (P>0,05). In the pediatric group, perimatrix mean thickness was 79 (41 - 259), median = 77 (40-265), sum = 1588 (831 - 5185), delta = 82 (44 - 248), minimum = 53 (16 - 165) and maximum = 127 (64 - 398). In the adult group, perimatrix mean thickness was 83 (26 - 174), median = 68 (30 - 265), sum = 1801 (558 - 3867), delta = 92 (45 - 190), minimum = 27 (12 - 100) and maximum = 136 (53 - 280). Spearman correlation coefficient showed an inverse weak correlation between the perimatrix thickness and age. There was also a moderate correlation between perimatrix thickness and the number of matrix layers, but there wasn’t a correlation between matrix layers and age. Conclusions: At the optic microscope, children´s and adult´s acquired cholesteatoma perimatrix appears as a dense conjunctive tissue of variable thickness. It exhibits an infiltrate consisting by plasma cells and lymphocytes and/or a granulation tissue and foreign body reactions. It is delimited at the profound plan by simple cuboidal epithelium. We found some evidence that there is an inverse weak-to-moderate correlation between the acquired cholesteatoma perimatrix thickness and the age of the patient at the occasion of surgery. The degree of perimatrix inflammation presents a moderate-to-strong correlation with the perimatrix thickness. Matrix and perimatrix thickness have a strong correlation.
Silveira, Netto Luciana Fick. "Impacto das otites médias crônicas supurativas na audição de crianças e adolescentes." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10851.
Full textIn chronic suppurative otitis media (CSOM), hearing loss is a marking and almost ubiquitous feature. It is estimated that the degree to which hearing is compromised is directly proportional to the damage caused to the structures of the middle ear. We believe that hearing thresholds may be influenced by factors such as the size and location of the tympanic perforation, presence of ossicular chain erosion or disarticulation as well as presence of cholesteatoma and its growth patterns. Objective: To compare air conduction thresholds, bone conduction thresholds and air-bone gaps between children and teenagers with chronic otitis media with (CCOM) and without cholesteatoma (NCCOM). Compare air-bone gap values between cholesteatoma’s growth patterns. Check the relation between number of perforated quadrants and size of air-bone gaps. Compare air-bone gap between tympanic perforations in posterior quadrants against those in anterior quadrants. Methods: Transversal study with 202 children and teenagers (287 ears), aged between 6 and 18, with chronic suppurative otitis media with or without cholesteatoma, submitted to digital videotoscopy and pure tone audiometry. Results and Conclusions: Air and bone conduction thresholds as well as air-bone gaps in children and teenagers with CCOM are significantly larger in all frequencies. There were no significative differences in air-bone gaps between epitympanic and posterior mesotympanic cholesteatomas. In NCCOM, gap value is positively correlated to number of quadrants with tympanic perforation. There was no significative difference between the airbone gaps in tympanic perforations affecting the posterior and anterior quadrants.
Dornelles, Cristina de Carvalho. "Angiogênese e metaloproteinases 2 e 9 : estudo comparativo entre colesteatomas adquiridos de pacientes pediátricos e adultos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/17782.
Full textCholesteatoma is an epidermal cyst with three distinct components: matrix, perimatrix and cystic content. The clinical significance of cholesteatoma lies in its association with potential intracranial complications due to bone destruction. Objective: To compare histological and immunohistochemistry analysis between pediatric and adult acquired. Methods: Cross-sectional study. The patients were divided in two groups, according to their age: 60 adults(>18 years old) and 60 children(until 18 years old). The cholesteatomas were fixed in formalin 10%. Five slides from each sample were prepared using standard histology techniques. Slides were analyzed according to average number of blood vessels (CD31), MMP2 and MMP9 positivity and thickness of the perimatrix. Data were analyzed using Mann-Whitney and Fisher's exact tests and Spearmann coeficient, with P values<0.05 considered significant. Results: Perimatrix thickness was 78(34-217); CD31 was 6(0-11), cytoplasmic MMP2 positivity was 0(0-2), nuclear MMP2 positivity was 0(0-1); MMP9 positivity was 2(0-4). Statistical difference, between children and adults, was found in perimatrix thickness(P=0.014); blood vessels(P=0.044); cytoplasmic MMP2(P=0.006), nuclear MMP2(P=0.056); MMP9(P=0.049). Conclusions: Pediatric cholesteatomas have a thicker perimatrix, a greater degree of inflammation, and produce more metalloproteinases than those of adult patients, we can suggest, with the combination of these factors, that cholesteatoma is more aggressive in children than in adults.
Silva, Denis Lessa da. "Estudo da orelha contralateral na otite média crônica : avaliação auditiva." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/67520.
Full textOtitis media (OM) is one of the leading causes of hearing loss in childhood. Due to its high prevalence and worldwide distribution, OM is still regarded as a public health issue. Nevertheless, few studies have assessed involvement of the contralateral ear (CLE) in patients with chronic otitis media (COM). To demonstrate the bilateral nature of COM, we designed three distinct studies, which focused on histopathology and anatomy, clinical findings and physiology (both previously published), and, finally, auditory function. Objective: To measure auditory function in the CLE in a sample of COM patients by means of air-conduction thresholds, bone-conduction thresholds, and the air-bone gap, and to compare CLE audiometry findings in patients with non-cholesteatomatous (NC-COM) or cholesteatomatous chronic otitis media (CCOM). Methods: This was a cross-sectional, contemporary and comparative study of 1000 patients with a diagnosis of COM. Clinical ear examination, video otoscopy, and pure-tone audiometry (PTA) were performed. Results: The overall prevalence rate of air-bone gap was approximately 40%, both in the total sample and after stratification by type of OM (393 [39.2%] patients overall, 279 [40.3%] in the NC-COM group, 113 [37.17%] in the CCOM group). Conclusions: As did clinical and histopathology findings in previous studies, audiological evaluation revealed a substantial prevalence of CLE involvement, providing evidence of the bilateral nature of COM.
Francesco, Renata Cantisani Di. "Correlação entre a morfologia craniofacial e doença da orelha média em adultos." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/5/5143/tde-19022004-164620/.
Full textThere are thousand types of faces and each one is unique. Individual faces are the result from the combination of different kinds of maxillas, mandibles, and orbits. The face proportions, in children, are distinct of adult ones. Craniofacial growth and development depends on a diversity of factors, such as: genetic, metabolic, nasal breathing, teeth development, etc. The auditory tube is part of middle ear and extends from temporal bone to nasopharynx. It has a more horizontal position in children than in adults; therefore otitis media is more frequent in this age group. The type of cranial base and the displacement of the maxilla during craniofacial growth influence the growth of the auditory tube. The lower frequency of otitis media in adults relates to the development of auditory tube during craniofacial growth. So, there should be a correlation between caniofacial morphology and otitis media. The aims of this study are to correlate facial types and cephalometric measurement morphology to otitis media and suggest which measurements can be used as a prediction of the evolution of otitis media. Sixty-four patients, 18 to 40 years old, were selected from the Outpatient Center of the Department of Otolaryngology of the University of São Paulo Medical School. They were divided into two groups: 32 with otitis media and 34 controls. We excluded patients with personal or familiar history of cleft palate, previous buccal, maxillar, pharyngeal, facial or nasal surgery, orthodontic treatment or obstructive process of the auditory tube ostia. All subjects underwent to complete ENT physical examination, videotoscopy, fibernasalendoscopy and lateral cephalograms. Statistical analysis of the cephalometric measurements showed significant differences of cranial base; projection of maxilla and facial height, in patients with otitis media when compared to the control group or to the ideal measures of the harmonic face. There was no predominance of any facial type. The following measures were found to be predictive of the evolution of otitis media: N-S (anterior cranial base), N-S.Ba (angle between anterior and medial cranial base), PMax (projection of the maxilla) and N-ANS(superior anteior facial height).'
MELO, Antonio Antunes. "Efeito da Mitomicina C intratimpânica no desenvolvimento do colesteatona e da otite média em ratos." Universidade Federal de Pernambuco, 2007. https://repositorio.ufpe.br/handle/123456789/3224.
Full textIntrodução: O colesteatoma da orelha média é uma doença inflamatória crônica associada muitas vezes à destruição do osso temporal. Há bastante tempo é conhecida a possibilidade de indução de colesteatomas pela introdução de certos agentes irritantes na orelha média, como misturas de talco e fibrina ou quinino. O propilenoglicol foi, recentemente, considerado uma droga eficaz na indução experimental do colesteatoma e é bastante usada, atualmente, com este objetivo. A mitomicina C tem uma ação antiproliferativa sobre os fibroblastos e apresenta efeitos de diminuição do tecido cicatricial após as cirurgias otorrinolaringológica e oftalmológica. Objetivos: Determinar se a administração da mitomicina C poderia evitar que a exposição ao propilenoglicol induzisse na orelha média de ratos o colesteatoma e a otite média. Métodos: O estudo foi experimental controlado e pareado. Vinte e quatro ratos albinos da linhagem Wistar foram submetidos a um total de três injeções intratimpânicas a cada semana nas suas orelhas direitas (grupo controle) e esquerdas (grupo experimental). A solução injetada na orelha média direita continha 0,2 mL de propilenoglicol a 50%, 0,1 mL de sulfato de gentamicina (40 mg/mL) e 0,1 mL de soro fisiológico a 0,9%. A solução injetada na orelha média esquerda continha 0,2 mL de propilenoglicol a 50%, 0,1 mL de sulfato de gentamicina (40 mg/mL) e 0,1 mL de mitomicina C (0,5 mg/mL). Os animais foram mortos após dez semanas para exames otomicroscópico e de microscopia de luz. Resultados : Houve diferença com significância estatística entre os grupos controle e experimental, em relação ao espessamento da mucosa (p = 0,004) e à distribuição do espessamento da mucosa na bula timpânica (p = 0,038). Não houve diferenças com significância estatística entre os grupos controle e experimental, no que se relaciona à espessura da membrana timpânica (p = 0,371), à distribuição da espessura da membrana timpânica (p = 0,223), à distribuição da integridade da membrana timpânica (p = 0,219), à distribuição dos achados otomicroscópicos (p = 0,262), à presença do exsudato (p = 0,125), da fibrose (p = 1,000) e do colesteatoma (p = 0,687). Conclusão: A mitomicina C intratimpânica não foi eficaz para impedir na orelha média de ratos a formação de colesteatoma e otite média
Schmidt, Viviane Bom. "Comportamento audiológico de pacientes com timpanoestapedopexia e os achados da orelha contralateral." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/52953.
Full textLopes, Bunzen Mayer Débora. "Avaliação da resposta inflamatória da bula timpânica do biopolímero da cana-de-açúcar." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/2956.
Full textIntrodução: A membrana de biopolímero da cana-de-açúcar tem sido utilizada experimentalmente em diversas áreas. Na Otologia existe a possibilidade da mesma ser utilizada como enxerto, na substituição da fáscia do músculo temporal. Objetivos: Analisar os resultados da interação da membrana de biopolímero da cana-de-açúcar com a bula timpânica do rato, comparada com a fáscia autóloga. Materiais e Métodos: Foi realizado estudo experimental, prospectivo, pareado com 24 ratos Wistar. Na orelha direita foi inoculada a membrana do biopolímero da cana-de-açúcar, e na orelha esquerda, a fáscia autóloga. Os ratos foram sacrificados com 4, 8 e 12 semanas após a cirurgia. As bulas timpânicas foram submetidas à análise histológica descritiva e histomorfométrica. O índice de absorção dos materiais foi analisado. Resultados: A análise histomorfométrica obtida através das médias das mensurações da membrana timpânica e da espessura da mucosa foi semelhante em ambas as orelhas. A análise descritiva evidenciou que o biopolímero causou mais exsudato que a fáscia precocemente, porém após 12 semanas, não havia mais reação inflamatória. Houve absorção total do biopolímero em três casos ao final do experimento. Conclusão: O biopolímero tem a capacidade de produzir exsudato precocemente, comparado com a fáscia, mas isso não influenciou o resultado final. O biopolímero é biocompatível, sendo absorvido completamente na bula timpânica. A membrana do bipolímero da cana-de-açúcar apresentou características que a capacitam como enxerto futuro na cirurgia otológica
Book chapters on the topic "Colesteatoma da orelha média"
Williams, Elizabeth Matilda Oliveira, Moniki Aguiar Mozzer Denucci, Ilma Alessandra Lima Cabral Rodrigues, and Patrícia Helena Ribeiro Caixão de Siqueira Barreto. "O desenvolvimento da linguagem na primeira infância e a audição na orelha média." In Tópicos em Ciências da Saúde – Volume 25. Editora Poisson, 2021. http://dx.doi.org/10.36229/978-65-5866-122-1.cap.01.
Full textConference papers on the topic "Colesteatoma da orelha média"
Costa Lobato, Lucas, Diego Calero, Evandro Maccarini, Stephan Paul, and Júlio Cordioli. "Modelagem da orelha média humana e validação experimental." In XXVIII ENCONTRO DA SOBRAC. Galoa, 2018. http://dx.doi.org/10.17648/sobrac-87108.
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