Cold-knife endoureterotomy for nonmalignant ureterointestinal anastomotic strictures

• Published in: Urology (Ridgewood, N.J.) N.J.), 2003-03, Vol.61 (3), p.512-517
• Main Authors: Poulakis, Vassilis, Witzsch, Ulrich, De Vries, Rachelle, Becht, Eduard
• Format: Article
• Language: English
• Subjects: Aged; Anastomosis, Surgical - adverse effects; Constriction, Pathologic - etiology; Constriction, Pathologic - surgery; Cryosurgery; Female; Humans; Intestinal Diseases - etiology; Intestinal Diseases - surgery; Intestines - surgery; Male; Middle Aged; Retrospective Studies; Ureter - surgery; Ureteral Obstruction - etiology; Ureteral Obstruction - surgery; Ureteroscopy - methods; Urinary Diversion - adverse effects; Urinary Diversion - methods
• ISSN: 0090-4295; 1527-9995
• DOI: 10.1016/S0090-4295(02)02503-7

To evaluate the long-term results of cold-knife incision (CNI) of nonmalignant ureterointestinal anastomosis strictures (UASs) after urinary diversion in a consecutive series of patients. Since 1994, we have evaluated retrospectively 40 patients with 43 UASs, who were primarily treated with CNI (group 1). Six patients from group 1 with 7 UASs who failed primary CNI comprised group 2. After placement of an 8F nephrostomy tube, a 0.035-inch guidewire bypassed the stricture in an antegrade fashion under guidance of a centrally opened ureteral catheter (5F). A wire-mounted cold-knife was pulled through the strictured area in retrograde fashion under fluoroscopic control. Postoperatively, an 8 to 12F stent was left indwelling for 6 to 12 weeks. Successful treatment was defined as radiographic and scintigraphic resolution of obstruction and symptomatic relief. In group 1, after removal of the stent, the ureteroenteric area remained patent in 26 (60.5%) of 43 UASs during a follow-up period of 38.8 months (range 12 to 85). The success rate at 1, 2, and 3 years was 86%, 67.8%, and 60.5%, respectively. In group 2, no success occurred. The diameter and length of the stricture, kidney function, hydronephrosis grade, presence of urinary infection at presentation, past CNI or radiotherapy, number of incisions with the cold-knife, and premature appearance of the anastomosis stricture were statistically significant influences on the outcome ( P