[Intra-diverticular neoplasms of the bladder. Apropos of a squamous carcinoma].

We present a case of a cirrhotic patient suffering an intradiverticular squamous carcinoma with perforation to the peritoneal cavity, diagnosed after performance of an emergency laparotomy due to acute abdomen with infaust evolution. The rarity of the entity and the differential diagnosis imposed are the reasons for our presenting it. A series of diagnostic, prognostic and preventive aspects are considered.