title: Retroperitoneoscopic ureterocalicostomy for congenital proximal ureteral stenosis.
abstract: We report the first case of retroperitoneoscopic ureterocalicostomy in a 17-year-old male patient with severe left hydronephrosis caused by a long congenital upper ureteral stenosis. With a retroperitoneoscopic approach, the stenotic segment was resected, the thin renal parenchyma overlying the lower calyx was fenestrated by a modest excision, and the proximal ureter was anastomosed to the lower pole in an end-to-end manner. At 2 years postoperatively, the patient was asymptomatic, with a significant reduction in hydronephrosis and a patent upper ureter. Retroperitoneoscopic ureterocalicostomy is technically feasible and can provide long-term successful reconstruction of a complicated ureteropelvic junction obstruction.
authors.affiliation: Department of Urology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
authors.forename: Akito
authors.initials: A
authors.lastname: Terai
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Kamoto
authors.forename: Osamu
authors.initials: O
authors.lastname: Ogawa
mesh_terms: D000293:Adolescent; D003251:Constriction, Pathologic / Q000151:congenital / Q000601:surgery; D006801:Humans; D007670:Kidney Calices / Q000601:surgery*; D010535:Laparoscopy / Q000379:methods*; D008297:Male; D012187:Retroperitoneal Space; D014517:Ureteral Obstruction / Q000151:congenital* / Q000601:surgery*; D014519:Ureterostomy / Q000379:methods*