Endostent: new device for ureteral strictures.

The results with the new Korth Endostent (manufactured by Rüsch), which was placed in 71 ureters after endopyelotomy, were compared with the results of conventional stenting in 183 ureters. Good or excellent results were seen in 79% of the Endostented ureters v 73% of the conventionally stented ureters. With conventional stents, results were better in primary than in secondary stenoses, whereas the reverse was true with the Endostent. The Endostent provided superior results in patients with third-degree hydronephrosis and in those with long scars. There was a striking reduction in the risk of infection (fever) in patients having an Endostent inserted (7% v 44%). The Endostent may also be indicated for permanent implantation in patients with strictures of ureterovesical anastomoses involving neobladders or allograft kidneys.