title: Application of memory metallic stents to urinary tract disorders in pediatric patients.
abstract: The use of memory metallic stents for the urinary tract in pediatric patients has not been reported. The authors report on 2 patients with urinary tract disorders who were successfully treated with a memory metallic stent. A thermoexpandable, nickel-titanium alloy stent was placed at the urethroureteral junction of a 4-year-old boy with ureteral stenosis associated with cloacal exstrophy for 18 months and at the urethra of a 2-year-old girl with ischuria after a repair of cloacal anomaly for 6 months. Temporary insertion of a memory metallic stent is a safe and effective alternative for organic stricture or functional obstruction of the urinary tract in pediatric patients.
authors.affiliation: Department of Pediatric Surgery, Osaka University Graduate School of Medicine, Osaka 565-0871, Japan. kamata@pedsurg.med.osaka-u.ac.jp
authors.forename: Shinkichi
authors.initials: S
authors.lastname: Kamata
authors.forename: Noriaki
authors.initials: N
authors.lastname: Usui
authors.forename: Masafumi
authors.initials: M
authors.lastname: Kamiyama
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yoneda
authors.forename: Yuko
authors.initials: Y
authors.lastname: Tazuke
authors.forename: Takaharu
authors.initials: T
authors.lastname: Ooue
mesh_terms: D000015:Abnormalities, Multiple / Q000601:surgery*; D001746:Bladder Exstrophy / Q000601:surgery*; D002404:Catheterization; D002675:Child, Preschool; D002988:Cloaca / Q000002:abnormalities*; D003559:Cystostomy; D004867:Equipment Design; D005260:Female; D005471:Fluoroscopy; D006801:Humans; D006869:Hydronephrosis / Q000209:etiology / Q000601:surgery; D008297:Male; D009403:Nephrostomy, Percutaneous; D009532:Nickel; D015641:Radiography, Interventional; D012003:Rectal Fistula / Q000601:surgery*; D012006:Rectovaginal Fistula / Q000601:surgery*; D015607:Stents; D014025:Titanium; D014517:Ureteral Obstruction / Q000601:surgery*; D001750:Urinary Bladder, Neurogenic / Q000209:etiology / Q000601:surgery; D014546:Urinary Catheterization; D014548:Urinary Fistula / Q000601:surgery*
chemical_list: C040654:titanium nickelide; D009532:Nickel; D014025:Titanium