[Primary signet ring cell adenocarcinoma of the bladder. Report of a case]. / Adenocarcinoma vesical primario de células en anillo de sello. Aportación de un caso clínico.

Primary adenocarcinoma of ring cells's bladder is a neoplasm very uncommon and aggressive. Its clinic aspects and diagnosis don't differ too much from the rest of the bladder's neoplasm. It's important the differentiation from a possible primary extravesical origin. Radical surgery is the only treatment with sensitive answer, and the prognosis in awful. We report a case.