[Large calcifications on double J ureteral endoprosthesis "forgotten" in situ. Report of a clinical case]. / Voluminose calcificazioni su endoprotesi ureterale a doppio J "dimenticata" in situ. Descrizione di un caso clinico.

Ureteral endoprostheses can be complicated by incrustations, sometimes making it impossible to withdraw the stent. A case in which the use of cistolithotripsy and of extracorporeal shock-wave lithotripsy (ESWL) allowed withdrawal of a double J ureteral stent with large incrustations is reported. The stent was placed 3 years before. Epidemiology, aetiology and therapeutic aspects of encrusted ureteral stents are discussed.