title: Silent obstruction after extracorporeal piezoelectric lithotripsy.
abstract: Extracorporeal piezoelectric lithotripsy (EPL) is frequently used to treat renal calculi. We are presenting a case that developed silent ureteric obstruction following three sessions of EPL of 4,000 shocks each. The obstruction was silent and asymptomatic, and was detected 6 weeks later on a routine follow-up renogram. The obstruction was due to an impacted stone fragment in the lower ureter. After release of the obstruction, the kidney function did not return to pre-therapy levels due to irreversible damage. This case demonstrates the importance of doing renograms before and within a few days after shock therapy for renal stones.
authors.affiliation: Unit of Urology, Mubarak Al-Kabeer Hospital, Kuwait.
authors.forename: A H
authors.initials: AH
authors.lastname: Mahmoud
authors.forename: A H
authors.initials: AH
authors.lastname: Elgazzar
authors.forename: T E
authors.initials: TE
authors.lastname: Nilsson
authors.forename: H M
authors.initials: HM
authors.lastname: Abdel-Dayem
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D008096:Lithotripsy / Q000379:methods*; D011866:Radioisotope Renography; D016284:Technetium Tc 99m Pentetate; D014517:Ureteral Obstruction / Q000000981:diagnostic imaging / Q000209:etiology*
chemical_list: D016284:Technetium Tc 99m Pentetate