RESUMEN
Objectives: To determine the prevalence of Her-2/Neu-cerbb-2 in the gastric mucosa of patients with gastric adenocarcinoma in a brazilian patient group. Methods: The immunohistochemical expression of Her-2/Neu was studied in 37 formalin-fixed paraffinembedded tissue sections. Results: The immunohistochemical reaction produced by the anti-HER- 2/Neu antibody was positive in two cases (5.4%). Conclusion: The low prevalence of Her-2/Neu observed in these southern brazilian cases is probably due to the great number of poorly differentiated cancers in this serie.
Objetivo: Determinar a prevalência do Her-2/Neu-CerbB-2 na mucosa de pacientes com adenocarcinoma de estômago em um grupo de doentes brasileiros. Métodos: A expressão imunoistoquímica do Her-2/Neu foi estudada em 37 amostras de tecidosfixados em formalina e embebidos em parafina. Resultados: A reação imunoistoquímica produzida pelo anticorpo HER-2/Neu foi positiva em dois pacientes (5.4%). Conclusão: A baixa prevalência Her-2/Neu observada neste grupo de pacientes é provavelmente devida ao grande número de tumores pouco diferenciados encontrados nesta série.
Asunto(s)
Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adenocarcinoma/genética , /biosíntesis , /genética , Neoplasias Gástricas/genética , Adenocarcinoma/química , Inmunohistoquímica , Estudios Retrospectivos , /análisis , Neoplasias Gástricas/químicaRESUMEN
OBJECTIVES: To determine the prevalence of Her-2/Neu-cerbb-2 in the gastric mucosa of patients with gastric adenocarcinoma in a brazilian patient group. METHODS: The immunohistochemical expression of Her-2/Neu was studied in 37 formalin-fixed paraffin-embedded tissue sections. RESULTS: The immunohistochemical reaction produced by the anti-HER-2/Neu antibody was positive in two cases (5.4%). CONCLUSION: The low prevalence of Her-2/Neu observed in these southern brazilian cases is probably due to the great number of poorly differentiated cancers in this series.