Ureteral obstruction secondary to sigmoid diverticulitis.

A case of ureteral obstruction secondary to diverticulitis is described. The patient had a 2-month history of lower left quadrant pain before an operation. As an intravenous pyelogram showed persistent hydronephrosis, an operation was performed. At the operation, a fibrotic mass which encased the left ureter and sigmoid colon was found. Ureterolysis and segmental sigmoidectomy were carried out. The pathological specimen showed two diverticula and subserosal cicatrization.