Utility of intraoperativelaparoscopic ultrasonography in laparoscopic nephron-sparing surgery

Abstract

：Objective To discuss therole of assistance of intraoperative uitrasonography in ret-roperitoneal laparoscopicnephron-sparing surgery for renal tumors. Methods The intraoperative laparoscopicultrasonography was applied in retroperitoneal nephron-sparing surgery for 20 patients, ofwhom 11 were men and 9 were women. The average age was 53(range 33 to 73) years. Therewere 12 patients with renal cell carcinoma and the mean tumor size was 2.9(range 1.4 to4.6)cm in diame-ter. All of them were staged as T1 N0 M0. Seven patients hadangiomyolipoma and the mean tumor size was 4.5(range 1.8 to 8.0)cm in diameter and 1patient had a 3.1 cm oncocytoma in diameter. The ul-trasonography was used to locate thetumor, observe the bloodstream and detect whether there were small satellite tumors. Thesurgical time, time of renal artery occlusion and operative effect were ob-served. ResultsLaparoscopic surgery was successful in all cases without conversion to open surger-y. Meanoperative time was 115 (range 85 to 270) min, mean time of renal artery occlusion was 28(range 22 to 50) min. During the mean followup of 16(range 4 to 30) months, no patientswith renal cell carcinoma had local or port site recurrence or metastatic disease.Conclusion In retroperitoneal laparoscopic nephron-sparing surgery, the intraoperativeuhrasonography is helpful to locate the tumor in the surgery, to estimate whether therenal artery is occluded completely and to excise the tumor pre-cisely.