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  • Title: [Treatment of congenital urethral stenosis (urethral ring) in children. Optic internal urethrotomy in the congenital bulbar urethral stenosis in boys].
    Author: Mori Y, Matsui T, Ogino T, Hosokawa S, Tsujimoto S, Ihara H, Terakawa T, Shima H, Shimada K, Arima M.
    Journal: Nihon Hinyokika Gakkai Zasshi; 1989 May; 80(5):704-10. PubMed ID: 2754895.
    Abstract:
    Congenital urethral stenosis in boys occurs at the junction of the entodermal primary urethra and ectodermal secondary urethra. Endoscopically this lesion is recognized as a ring-form stenosis just distal to the external urethral sphincter. It has been considered as rare congenital anomaly in American literature. But in our experience congenital urethral stenosis is an important cause of recurrent urinary tract infections, enuresis, pollakisuria or hematuria in pediatric urological practice. It also disturbs spontaneous healing of vesicoureteral reflux. The most effective treatment of this lesion is optic internal urethrotomy under direct vision. We would like to report our experience of optic internal urethrotomy for congenital urethral stenosis in boys. From 1974 to 1986, 226 boys with congenital bulbar urethral stenosis were treated in our clinic. Optic internal urethrotomy was performed using a Sachse urethrotome with a 10 or 13 Fr. sheath. Of the 176 ureters with vesicoureteral reflux, spontaneous disappearance of reflux after optic internal urethrotomy was noted in 62.5% of Grade I-II, 65.0% of Grade III, 28.9% of Grade IV and 16.7% of Grade V ureters. These spontaneous disappearance rates were significantly higher than those of primary vesicoureteral reflux in Grade III, IV and V ureters. Of the drug-resistant enuretic boys with a congenital bulbar urethral stenosis, enuresis disappeared or ameliorated in 69.4% after optic internal urethrotomy. Furthermore, urinary tract infections were mostly prevented by optic internal urethrotomy, irrespective of the presence or absence of vesicoureteral reflux. Our results support the view that congenital urethral stenosis (urethral ring) is an important clinical entity in pediatric urology.
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