title: [Congenital ureteral valves: report of 2 cases].
abstract: Congenital ureteral valves have not been a well recognized condition for the cause of ureteral obstruction. In our first case a 21-year-old male presented with left flank pain. Intravenous urography showed left mild hydronephrosis due to upper ureteral obstruction. Partial ureteral resection and re-anastomosis was performed. Histology demonstrated mucosal folds with smooth muscle. In our second case a 12-year-old boy presented with left flank pain. Retrograde pyelogram showed a fold-like filing defect which suggested ureteral valve. Endoscopical valve resection through nephrostomy was performed. Optimal management and diagnostic difficulties were discussed.
authors.affiliation: Department of Urology, School of Medicine, Keio University.
authors.forename: A
authors.initials: A
authors.lastname: Miyakawa
authors.forename: S
authors.initials: S
authors.lastname: Baba
authors.forename: H
authors.initials: H
authors.lastname: Tazaki
mesh_terms: D000328:Adult; D002648:Child; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology; D008297:Male; D014513:Ureter / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000601:surgery; D014517:Ureteral Obstruction / Q000209:etiology; D014567:Urography