Ureteral replacement with gore-tex tube grafts

Abstract

For evaluating the role of Core-lex (polytetraflouroethylene) as an ureteral substitude in dogs after resection of a 5-8 cm-long middle segment, five mongrel dogs underwent resection of the middle segment of the left ureter and segmental replacement of the resected part with segments of Gore-Tex over a double-j cahtheter. The double-j stents were removed at 21 days and the dogs were evaluated by excretory urography and abdominal ultrasonography 12 weeks after surgery. They were then sacrificed ant the ureters and the kidneys examined both grossly and micro¬scopically. There was radiologic evidence of advanced hydronephrosis on the left side in all 5 dogs. Grossly, the left kidneys showed marked pelvic and proximal ureteral dilatation and atrophy of parenchyma. Severe stricture at the anastomotic sides and marked fibrous tissue around the prostheses were found. No celluler lining was found in the Gore-Tex lumen. We concluded that, there is no potential for ureteral replacement by Gore-Tex tube graft.