VS17-04 LAPAROSCOPIC PYELOLITHOTOMY G. Franco, P. Francesco, G. Antonio Maria, R. Ai Ling, S. Antonio—Italy Background: The laparoscopic surgery of the kidney and of the urinary tract is in continuous evolution and the indications are becoming larger due to its safety and mini-invasivity in comparison with the ‘‘open’’ technique. The video shows ‘‘step by step’’ a laparoscopic pyelolithotomy of a 2.5 cm pelvic stone. Methods: A patient 35 years old joined to our observation with ecographic and urographic diagnosis of right renal pelvic stone. In February 2008 the patient has been submitted to transperitoneal laparoscopic pyelolithomy. Before the procedure we positioned an ureteral stent (Contour VL Variable Length Percuflex, Boston Scientific). After a wide isolation and the incision of the renal pelvis, we proceeded to the removal of the stone. The following step was the suture of the pelvis with vicryl 3/0 stiches. Results: The procedure lasted 175 minutes. Bleeding was irrelevant; after four days we transformed the Contour catheter in a double–J stent previous ascending pyelography and we removed the perianastomotic drain; in the 5th postoperative day the vesical catheter was removed. No perioperative complications were observed and the patient was discharged in the 6th post-operative day. The ureteral stent was removed 28 days after the surgical procedure. A 1 year follow-up didn’t show hydronephrosis neither residual lithiasis. Conclusion: The transperitoneal laparoscopic pyelolithotomy can be considered an effective and minimally invasive option for selected cases of renal lithiasis.