Ureteral obstruction secondary to perianeurysmal fibrosis.

Ureteral obstruction secondary to perianeurysmal fibrosis is rare. We have added 3 cases to the 61 cases previously reported in the literature. Perianeurysmal fibrosis should be included in the differential diagnosis of ureteral obstruction particularly when there is medial deviation of the ureters. Abdominal ultrasound is a valuable screening test to confirm the presence of perianeurysmal fibrosis. Treatment must be individualized for each patient, but the majority of patients will benefit most from preoperative urinary drainage followed by aneurysmectomy and ureterolysis.