Helicobacter pylori e linfoma gástrica de células B da zona marginal do tipo malt
Palavras-chave:
linfoma, linfoma do tecido linfóide associado a mucosa, helicobater pylori, imunoistoquímica, genéticaResumo
Linfomas de células B da zona marginal do tecido linfóide associado a mucosa (linfoma MALT) são linfomas extra-nodais, compreendendo mais de 50% dos linfomas gástricos primários. É freqüente a associação entre Helicobacter pylori e alguns tumores gástricos, como adenocarcinoma e linfoma MALT. Por isso, pacientes com MALT gástrico geralmente são submetidos ao tratamento para erradicação do H. pylori. Entretanto, existem casos não responsivos à terapêutica de erradicação deste microrganismo. Em geral, o linfoma MALT gástrico de baixo grau tem evolução indolente e, quando diagnosticado em estágios precoces, há a possibilidade de cura por meio de tratamento cirúrgico. Neste trabalho, descreveu-se um caso de MALT gástrico avançado, não responsivo ao tratamento clínico para H.pylori, e foi revisado os conceitos novos e pertinentes sobre o tratamento desta associação (tumor - agente infeccioso).
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