Outcomes Of Robot-assisted Partial Nephrectomy For Completely Endophytic Renal Tumor

ObjectiveTo analyze the outcomes of robot-assisted partial nephrectomy(RAPN)and improve the treatment for completely endophytic renal tumors.Patients and MethodsFrom February 2015 to October 2018,a retrospective analysis of 120 RAPN cases were divided into completely endophytic renal tumor group(51 cases)and non-endophytic renal tumor group(69 cases).The age,gender,weight,tumor side,tumor size,Glomerular filtration rate,R.E.N.A.L score,ASA score,PADUA score,serum creatinine,operative time,warm ischemia time,estimated blood loss,transfusion,postoperative hospital stay,postoperative complications,Trifecta achievement were compared between the two groups.ResultsAll 120 RALPN cases were successfully done without conversion to open or radical nephrectomy.The surgical margins were negative in both group.There were no statistically significant differences in age,gender,weight,tumor side,Glomerular filtration rate,ASA score,tumor size,Serum creatinine,operative time,estimated blood loss,transfusion,postoperative hospital stay,postoperative complications,between the two groups(P>0.05).Patients with a completely endophytic renal tumor had.higher R.E.N.A.L score(9.06±1.71 VS 6.84±1.76,P<0.05).higher PADUA score(11.02±1.42 VS 8.39±1.60,P<0.05).longer warm ischemia time(23.18±7.40 min VS 20.64±5.48 min,P<0.05).Trifecta achievement had statistically significant(P <0.05).There was no postoperative local recurrence or distant metastasis in the completely endophytic renal tumor group.1 case(1.4%)had pulmonary metastasis in non-endophytic renal tumor group.ConclusionsRAPN is a safe and feasible option for treatment of Completely endophytic renal tumor,with surgical outcomes resembling those obtained in the non-endophytic renal tumor.