Signet-ring cell adenocarcinoma of the bladder: case series between 1990-2009.

Objectives: To present a revision on the signet-ring cell bladder adenocarcinomas found in our department.

Methods/results: We reviewed all the transurethral resections of the bladder (TURB) performed between 1990 and 2009 finding 9 cases of primary signet ring cell adenocarcinomas (4 pure and 5 mixed). Eight were male and one female, with ages between 39 and 82 years.