title: Replacement of obstructed loop and pigtail nephrostomy and biliary drains.
mesh_terms: D001662:Biliary Tract Surgical Procedures; D002408:Catheters, Indwelling; D004322:Drainage / Q000295:instrumentation*; D006801:Humans; D007082:Ileum / Q000601:surgery; D007668:Kidney / Q000601:surgery; D014513:Ureter / Q000601:surgery; D014547:Urinary Diversion