The unintubated ureterotomy endourologically revisited

Stephanie M. Gardner, J. Stuart Wolf, Stephen Y. Nakada, Young Tae Moon, Robert S. Figenshau, Margaret S Pearle, Jon J. Soble, Peter A. Humphrey, Ralph V. Clayman

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Purpose: The duration of stenting after endoureterotomy is a controversial issue. An even more basic question, however, is whether stent placement is needed at all. We performed a porcine study to address this question. Methods: A unilateral midureteral stricture was created in 20 minipigs. Six weeks later, 15 pigs underwent endoureterotomy. In 10 animals, a 7F ureteral stent was placed for 1 week. Five pigs remained unstented. Three months later, all 20 ureters were studied radiographically and were harvested. Results: Three of 5 control animals and 2 of 10 stented animals had strictures. In the unstented study group, all 5 animals had a nonobstructing dilation at the site of endoureterotomy. This was corroborated by a normal furosemide washout renal scan in all 3 animals so tested. Conclusions: The result of unstented endoureterotomy in the porcine model suggests that, after endoureterotomy of secondary midureteral strictures, stenting may be unnecessary.

Original languageEnglish (US)
Pages (from-to)1160-1163
Number of pages4
JournalJournal of Urology
Issue number3
StatePublished - Sep 1996


  • miniature
  • stents
  • swine
  • ureter

ASJC Scopus subject areas

  • Urology


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