Laparoscopic assisted percutaneous nephrolithotomy (PCNL) in ectopic kidneys: two different techniques.

Two patients presented with calculi in ectopic kidneys. Complete clearance of calculi was achieved by laparoscopic assisted percutaneous nephrolithotomy (PCNL), by different but related techniques. In one patient with prior history of open pyelolithotomy, the anterior surface of the kidney was exposed by mobilizing the overlying sigmoid colon laparoscopically and the percutaneous tract was established into the desired calyx under combined laparoscopic and fluoroscopic control. In the second patient, the tract was established between the major mesenteric vessels without any mobilization of the bowel. Herein, we outline the nuances of these two related techniques, and the indications and contraindications for their use for laparoscopic assisted PCNL in ectopic kidneys.