[Sigmoido-vesical fistula: a case report].

Background: Colovesical fistula is a rare complication of inflammatory and neoplasic pelvic diseases (0.2%).

Aim: To report a new case.

Case: We report the case of a 74-year-old woman, with a charged previous medical history and had not had hysterectomy. She was admitted because of cystitis with haematuria associated to faecaluria and pneumaturia confirmed by an intravenous pyelogram. Water-soluble contrast medium show the sigmoidovesical fistula. A sigoid sticture is identified at colonoscopy and biopsy was realised. The patient had had sigmoidectomy with Hartmann's procedure. Histologic study confirm the diverticulatis with peridiverticular abcess and fistula. We suggest that early diagnosis and management of sigmoid diverticulatis is required to prevent complicatins like stricture and fistula.