[Ureteral strictures caused by bilharziasis].

In 512 patients with bilharziosis in the urosystem altogether 804 strictures of the ureter were proved. 326 patients had bilateral changes of the ureter (63.7%). With 737 stricture (91.7%) the lower third of the ureter was most frequently affected. Strictures of the medium and upper third were by far more infrequent (67 = 8.3%). The main operation techniques were passage ureteroneocystostomy (40.7%), neoimplantation of the ureter at the roof of the bladder (25.1%) and nipple-ureteroneocystostomy (19.2%). 31 patients (6.1%) had postoperative complications, there was no operation mortality. The best results were obtained by selection of the operation technique suitable for the adequate case and by prevention of a repeated affection with bilharziosis.