title: Indiana pouch stone formation caused by a long-forgotten metallic ball bearing.
abstract: The presence of a foreign body in the urinary tract may serve as a nidus for stone formation. A 40-year-old male was found on CT scan to have a 2.4 cm stone in his Indiana pouch urinary diversion. As the stone was fragmented during endoscopic lithotripsy, a metallic round object was visualized, which was subsequently established to be a metallic ball bearing. Upon questioning after the procedure, the patient reported that 4 years earlier he had been accidentally shot with a blow dart gun and the "miraculous hit" went directly into his Indiana pouch stoma.
authors.affiliation: Department of Urology, University of Iowa, Iowa City, Iowa 52242-1089, USA.
authors.forename: Kenneth G
authors.initials: KG
authors.lastname: Nepple
authors.forename: Bernard
authors.initials: B
authors.lastname: Fallon
mesh_terms: D000328:Adult; D002432:Cecum / Q000601:surgery; D004724:Endoscopy / Q000379:methods; D005547:Foreign Bodies / Q000150:complications*; D006801:Humans; D007082:Ileum / Q000601:surgery; D008096:Lithotripsy / Q000379:methods; D008297:Male; D054047:Surgical Stomas; D014545:Urinary Calculi / Q000175:diagnosis* / Q000209:etiology* / Q000628:therapy; D014547:Urinary Diversion / Q000009:adverse effects*