Percutaneous approach to the ureter.
D006801:Humans; D007668:Kidney; D011677:Punctures / Q000379:methods*; D014513:Ureter; D014517:Ureteral Obstruction / Q000628:therapy; D001743:Urinary Bladder; D014546:Urinary Catheterization / Q000295:instrumentation / Q000379:methods*