title: [Endoscopic treatment for severe encrusted ureteral stent left in place for 3 years].
abstract: A 52-year-old man had bilateral ureteral stents placed before treatment for ureteral and renal stones, but did not return for treatment and follow-up. Three years later, he complained of hematuria and vertigo. An abdominal X-ray revealed large renal and ureteral stones rising from and enveloping the stent. A bilateral percutaneous nephrostomy was placed. The right ureteral stent was easily removed with a cystoscope. The left ureteral stone was separated from the stent by ureteroscopic lithotripsy (TUL) and percutaneous nephroscopic lithotripsy (PNL). The left stent was torn off and difficult to remove because of encrustation. It was finally removed through an endoscopic procedure. Right PNL and extracorporeal shock wave lithotripsy (ESWL) were performed and all stones and stents were extracted. He was stone-free at 4 months.
authors.affiliation: Department of Urology, Osaka Red Cross Hospital.
authors.forename: Naoki
authors.initials: N
authors.lastname: Terada
authors.forename: Ryuichiro
authors.initials: R
authors.lastname: Arakaki
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Okada
authors.forename: Mitsuteru
authors.initials: M
authors.lastname: Kitahara
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kaneko
authors.forename: Kohei
authors.initials: K
authors.lastname: Omori
authors.forename: Kazuo
authors.initials: K
authors.lastname: Nishimura
mesh_terms: D020878:Device Removal; D004724:Endoscopy; D006801:Humans; D007669:Kidney Calculi / Q000209:etiology* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D015607:Stents / Q000009:adverse effects*; D014513:Ureter; D014514:Ureteral Calculi / Q000209:etiology* / Q000601:surgery