An unusual case of delayed rectosigmoid compression by pelvic mass following cystectomy: report of a case.

A rare case of rectosigmoid compression by an enormous obscure pelvic mass after cystectomy is reported. Pelvic collections in the form of abscess, hematoma, lymphocele, and urinoma are not uncommon in the early postoperative period following pelvic surgery. However, delayed appearance of a benign pelvic mass as a late complication of surgery is very rare. Localized pelvic masses discovered years after cystectomy for bladder tumor may lead to an erroneous clinical impression of local recurrence of the primary neoplasm. Differential diagnosis of common pelvic masses, diagnostic studies, and treatment are discussed.