Abstract
Since the ureteral obstruction secondary to the abdominal aneurysm has been rare in the Japanese literatures, we report two cases. The aneurysm of the aorta commonly causes bilateral ureteral obstruction. The advanced case becomes uremic. Retroperitoneal fibrosis accounts for this condition. However, the results of biopsy from periureteral tissue in our cases did not show any fibrotic changes. There may exist unknown etiology.
The incidence of this disease will be increasing in Japan, so that the urologists must share the responsibility with the vascular surgeons to establish the diagnostic methods and the treatment.
