A percutaneous nephrostomy is the placement of a small, flexible rubber tube (catheter) through your skin into your kidney to drain your urine. It is inserted through your back or flank. Percutaneous nephrostolithotomy (or nephrolithotomy) is the passing of a special medical instrument through your skin into your kidney. This is done to remove kidney stones.
Most stones pass out of the body on their own through urine. When they do not, your health care provider may recommend these procedures. During the procedure, you lie on your stomach on a table. You are given a shot of lidocaine. This is the same medicine your dentist uses to numb your mouth. The provider may give you medicines to help you relax and reduce pain.
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