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1.
Braz. j. otorhinolaryngol. (Impr.) ; 81(1): 58-62, Jan-Feb/2015. tab
Article in English | LILACS | ID: lil-741320

ABSTRACT

Introduction: Squamous cell carcinoma is the most common neoplasm of the larynx, and its evolution depends on tumor staging. Vascular endothelial growth factor is a marker of angiogenesis, and its expression may be related to increased tumor aggressiveness, as evidenced by the presence of cervical lymphatic metastases. Objectives: To evaluate the expression of the vascular endothelial growth factor marker in non-glottic advanced squamous cell carcinoma of the larynx (T3/T4) and correlate it with the presence of cervical lymph node metastases. Methods: Retrospective clinical study and immunohistochemical analysis of vascular endothelial growth factor through the German scale of immunoreactivity in products of non-glottic squamous cell carcinomas. Results: This study analyzed 15 cases of advanced non-glottic laryngeal tumors (T3/T4), four of which exhibited cervical lymphatic metastases. There was no correlation between vascular endothelial growth factor expression and the presence of cervical metastases. Conclusion: Although vascular endothelial growth factor was expressed in a few cases, there was no correlation with the spread of cervical lymph metastases. .


Introdução: O carcinoma de células escamosas é a neoplasia mais frequente da laringe e seu prognóstico depende do estadiamento. A progressão da doença está relacionada a fatores intrínsecos celulares do câncer, não conhecidos. O VEGF (vascular endothelial growth factor) é um marcador de angiogênese e sua expressão pode estar relacionada a uma maior agressividade tumoral, evidenciada pela presença de metástases linfáticas cervicais. Objetivos: Avaliar a expressão do marcador VEGF em carcinoma de células escamosas da laringe avançados (T3/T4), não glóticos e correlacionar quanto à presença de metástases linfáticas cervicais. Método: Estudo clínico retrospectivo de análise imunohistoquimica do VEGF através da escala Germânica de imunorreatividade em produtos de carcinomas epidermóides não glóticos. Resultados: Analisados 15 casos de tumores avançados de laringe (T3/T4) não glóticos, sendo sete com presença de metástases linfáticas cervicais. Não houve correlação entre a expressão do VEGF e a presença de metástases cervicais. Conclusão: O VEGF foi pouco expressado nos casos estudados e não foi observada sua correlação com a disseminação de metástase linfática cervical. .


Subject(s)
Humans , Carcinoma, Squamous Cell/pathology , Carcinoma, Squamous Cell/secondary , Laryngeal Neoplasms/pathology , Vascular Endothelial Growth Factor A/blood , Biomarkers, Tumor/blood , Carcinoma, Squamous Cell/blood , Immunohistochemistry , Lymphatic Metastasis , Laryngeal Neoplasms/blood , Neoplasm Staging , Retrospective Studies
2.
Clinics ; 69(9): 579-584, 9/2014. tab, graf
Article in English | LILACS | ID: lil-725406

ABSTRACT

OBJECTIVE: Unplanned excision of soft tissue sarcomas is common because benign soft tissue lesions are very frequent. This study evaluated the impact of unplanned resections on overall survival, local recurrence and distant metastasis in patients with soft tissue sarcomas of the extremities. METHODS: In total, 52 patients who were diagnosed with soft tissue sarcomas between May 2001 and March 2011 were analyzed in a retrospective study. Of these patients, 29 (55.8%) had not undergone previous treatment and the remaining 23 (44.2%) patients had undergone prior resection of the tumor without oncological planning. All subsequent surgical procedures were performed at the same cancer referral center. The follow-up ranged from 6 to 122 months, with a mean of 39.89 months. Age, lesion size and depth, histological grade, surgical margins, overall survival, local and distant recurrence and adjuvant therapies were compared. RESULTS: Residual disease was observed in 91.3% of the re-resected specimens in the unplanned excision group, which exhibited greater numbers of superficial lesions, low histological grades and contaminated surgical margins compared with the re-resected specimens in the planned excision group. No differences were observed in local recurrence and 5-year overall survival between the groups, but distant metastases were significantly associated with planned excision after adjustment for the variables. CONCLUSIONS: There was no difference between patients undergoing unplanned excision and planned excision regarding local recurrence and overall survival. The planned excision group had a higher risk of distant metastasis, whereas there was a high rate of residual cancer in the unplanned excision group. .


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Humans , Middle Aged , Young Adult , Extremities/surgery , Sarcoma/surgery , Soft Tissue Neoplasms/surgery , Kaplan-Meier Estimate , Multivariate Analysis , Neoplasm Grading , Risk Factors , Sarcoma/mortality , Sarcoma/pathology , Soft Tissue Neoplasms/mortality , Soft Tissue Neoplasms/pathology , Treatment Outcome , Tumor Burden
3.
Braz. j. otorhinolaryngol. (Impr.) ; 80(4): 290-295, Jul-Aug/2014. tab, graf
Article in English | LILACS | ID: lil-721413

ABSTRACT

INTRODUCTION: Squamous cell carcinoma is the most common neoplasm of the larynx and glottis, and its prognosis depends on the size of the lesion, level of local invasion, cervical lymphatic spread, and presence of distant metastases. Ki-67 (MKI67) is a protein present in the core, whose function is related to cell proliferation. AIM: To evaluate the expression of marker Ki-67 in squamous cell carcinoma of the larynx and glottis and its correlation to pathological findings. METHODS: Experimental study with immunohistochemistry analysis of Ki-67, calculating the percentage of the cell proliferation index in glottic squamous cell carcinomas. RESULTS: Sixteen cases were analyzed, with six well-differentiated and 10 poorly/moderately differentiated tumors. There was a correlation between cell proliferation index and degree of cell differentiation, with higher proliferation in poorly/moderately differentiated tumors. CONCLUSION: The cell proliferation index, as measured by Ki-67, may be useful in the characterization of histological degree in glottic squamous cell tumors. .


INTRODUÇÃO: O carcinoma de células escamosas é a neoplasia mais frequente da laringe e da região glótica, seu prognóstico depende do tamanho da lesão, do nível de invasão local, disseminação cervical linfática e da existência de metástases à distância. Ki-67 (MKI67) é uma proteína presente no núcleo, cuja função está relacionada com a proliferação celular. OBJETIVOS: Avaliar a expressão do marcador Ki-67 em carcinoma de células escamosas da laringe glóticos e correlacionar sua expressão com os achados anatomopatológicos. MÉTODO: Trabalho experimental de análise imunohistoquímica do Ki 67 através do cálculo percentual do índice de proliferação celular em produtos de carcinomas epidermóides glóticos. RESULTADOS: Dezesseis casos foram analisados, sendo seis bem diferenciados e dez pouco/moderadamente diferenciados. Houve correlação entre o índice de proliferação celular e o grau de diferenciação celular, sendo a proliferação maior nos pouco/moderadamente diferenciados. CONCLUSÃO: O índice de proliferação celular, medido pelo Ki-67 pode ser útil na caracterização do grau histológico em tumores glóticos de células escamosas. .


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Cell Differentiation , Carcinoma, Squamous Cell/pathology , /analysis , Laryngeal Neoplasms/pathology , Biomarkers, Tumor/analysis , Cell Proliferation , Cohort Studies , Cross-Sectional Studies , Glottis , Immunohistochemistry , Neoplasm Staging , Predictive Value of Tests , Prognosis
4.
Article in Portuguese | LILACS, BBO | ID: lil-686915

ABSTRACT

Introdução: Os mixomas odontogênicos são tumores benignos,raros, de origem mesenquimal, que acometem principalmentea mandíbula. Esses tumores apresentam um comportamentolocal agressivo e tendem a recorrer. Seus principais diagnósticosdiferenciais incluem os tumores queratocísticos, odontomas,ameloblastomas, entre outros. Por serem resistentes àquimioterapia ou radioterapia, devem ser tratados cirurgicamente,por curetagem da lesão para lesões menores ou cirurgia comexérese total e ressecção óssea, entretanto a primeira opção estárelacionada a altas taxas de recorrência (acima de 25%). Relatode caso: Apresentamos o caso de uma paciente do sexo feminino,de 31 anos, diagnosticada com um mixoma odontogênico centralem região de maxila, submetida à cirurgia de maxilectomia, comressecção da porção infraestrutural, com exérese total da lesão(margens livres) e colocação de prótese no transoperatório.


Subject(s)
Humans , Female , Adult , Maxilla , Myxoma , Head , Neck
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