Renal abscess is treated with antibiotics given through the blood by IV (“intravenously”) and/or by draining the pus from the abscess.
The draining can be done with surgery or by putting a tube (“catheter”) through a needle in the skin over the kidney (“percutaneous drainage”). X-rays are used to help see that the needle is in the kidney. Percutaneous drainage is a recent technique and is the method being used more often.
Drainage has been the traditional treatment for renal abscess. But during the past 10 years treating with IV antibiotics and observation has worked well when the disease has been noticed early.