Abstract
In order to treat the iatrogenic ureteral stricture of more than 8 cm length after transurethral ureterolithotripsy, we planned to perform ureterocystoneostomy with psoas hitch and Boari flap. Because of the longer defect of the affected ureter than presurgically expected and the rigid and thickened ureteral stump resulting from chronic inflammation, anti-reflux technique by forming submucosal tunnel could not be achieved as in the standard Boari flap and we reluctantly anastomosed the ureteral stump to the end of the tubularized bladder wall flap in end-to-end fashion. In order to secure the anti-reflux mechanism we created a submucosal tunnel in the posterior bladder wall according to the technique reported by Casale and Rink where it originally worked as anti-incontinence mechanism of catheterizable vesicostomy. The follow-up examinations showed no recurrence of ureteral stricture nor occurrence of vesicoureteral reflux.
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