Endoscopic Treatment of Vesicoureteric Reflux with Bovine Collagen

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Abstract
A submucosal injection with bovine collagen (Zyplast^®) was performed in 45 female patients with 70 refluxing ureters. 4 ureters showed reflux grade IV, while the others had reflux grade I—III. All patients suffered from recurrent urinary tract infections. In 18 ureters, a second injection was given. As a result of this treatment, reflux was cured in 85.8% of the ureters. Only 13 patients had urinary tract infections during the follow-up period (6-24 months). 5 patients had antireflux surgery and collagen was excised. The histology of the specimen did not show an inflammatory reaction. Collagen injections could gain great importance in the management of vesicoureteral reflux.

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