Organ-preserving surgery for localized renal cell carcinoma: Current approaches.

Abstract

e16077 Background: Introduction of modern organ-preservingapproaches in surgical treatment of kidney cancer is limited by the duration of warm ischemia used during the partial nephrectomy (PN), including surgery for elective indications. Some resection procedures require prolonged warm ischemia time resulting in acute kidney injury and development of renal failure in the postoperative period. The purpose of the study was to analyze the effectiveness of a new organ-preserving surgery method for kidney cancer. Methods: 46 patients with clinically localized renal cancer, R.E.N.A.L. score 6-10, underwent PN for elective indications. Patients were divided into two groups: the first group – 20 patients (8 patients – laparoscopic PN (LPN), 12 – open PN (OPN)) with bilateral perirenal procaine blockade (BPPB) before the resection. The second group included 26 patients (19- LPN, 7– OPN) receiving surgery without BPPB. BPPB was performed under US-control. 50 ml of 0.25% procaine solution was successively injected to the perinephric fat in upper, middle and lower kidney segments at both sides. Acute kidney injury (AKI) was diagnosed by serum creatinine level increase by 50% of the initial level and higher. Results: Patients in both groups were comparable by age – 58.35±7.5 (44–70) and 58.7±5.6 (50–65) years, and resection difficulty by R.E.N.A.L. score – 7.35±1.1 (6–10) and 7.15±1.2 (6–10), respectively. Median warm ischemia time did not differ significantly in both groups and was 20.0±2.99 (15–25) and 18.42±2.93 (15–25) min., respectively. Morphologically, all patients were diagnosed with renal cancer, surgical margins were negative. 9 (34.6%) patients of the second group developed AKI, while no AKI was registered in the first group. Urinary fistula and delayed bleeding were not observed. Conclusions: The results suppose renal protective effect of BPPB during partial nephrectomy for kidney cancer with warm ischemia time of 15-25-minutes.