Percutaneous Surgery
Sometimes, calculations are removed by a «surgery through a tube or tunnel.» The surgeon makes a small cut in the back and creates a narrow tunnel into the kidney.Then located and removed using a special calculation, breaking or fragmenting instrument if necessary.
![percutaneous nephrostomy-PNL-](http://urologoenmerida.com/wp-content/uploads/2014/08/percutaneous-nephrostomy-PNL.jpg)