Percutaneous antegrade pyelography and nephrostomy guided by ultrasound.
D002675:Child, Preschool; D004322:Drainage; D005402:Fistula; D006801:Humans; D007682:Kidney Pelvis / Q000601:surgery*; D008875:Middle Aged; D011187:Posture; D012867:Skin; D014463:Ultrasonography; D014546:Urinary Catheterization; D014567:Urography / Q000379:methods*