Nephrostomy / Ureteric Stenting
A nephrostomy is the insertion of a drainage catheter through the skin, into the kidney to allow drainage of urine. It is inserted when the ureter has been blocked, causing urine to backflow, rather than drain through to the bladder. It is often a temporary measure.
A ureteric stent is the insertion of a thin plastic tubing the ureter. This is to ensure the ureter remains patent, therefore allowing urine to drain from the kidney, down into the bladder. The stent will be permanent, or semi-permanent.