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Radiology, Vol 180, 447-450, Copyright © 1991 by Radiological Society of North America

ARTICLES

Stricture disease: radiology of urethral stents

JJ Donald, D Rickards and EJ Milroy
Department of Radiology, Middlesex Hospital, London, England.

Self-expanding metal stents are emerging as an effective alternative treatment in the management of urethral obstruction. The radiologic studies of 33 men with anterior urethral strictures (subprostatic, n = 11; bulbar, n = 22) that had recurred despite repeated optical urethrotomy and dilation were reported. In all patients, the stricture was successfully treated with stent insertion. Urethrography performed 1 month later in 19 patients showed an irregular intrastent lumen of varying degrees due to a hyperplastic urothelial reaction confirmed at endoscopy the same day. Available follow-up urethrograms in seven patients at 3 months showed that the hyperplasia was settling, and by 6 months, the intrastent lumen was smooth and of good caliber. Urethrography revealed postoperative structures in 14 patients. Strictures seen at 1 month (n = 6) were due to initial stent misplacement and were treated with the insertion of a second stent. Strictures seen 3 months after insertion (n = 4) occurred within the stent lumen and were considered to be significant at endoscopy in only one patient. Strictures that developed 6-12 months after stent insertion (n = 4) were not within the stent and were considered to represent genuine new strictures.


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