Effect Of Mixed Reality-assisted Robotic Surgery On The Treatment Of Complex Renal Tumors

Objective:To explore the feasibility of applying(Mixed Reality,MR)to robotic surgery for complex renal tumors.Methods:From June 2018 to June 2019,50 patients with complex renal tumor diagnosed by CT or MRI in our department were randomly divided into MR assisted group and traditional operation group.The data of perioperative related indexes,postoperative complications and pathological results of the two groups were compared.The statistical methods were t test,chi square test and nonparametric test.Results:(1)From June 2018 to June 2019,50 patients(38 males,12 females,14-83 years old,average age 50.5 years old)who were diagnosed as complicated renal tumor surgery by CT or MRI in our department were selected for robot assisted partial nephrectomy.There was no significant difference between the two groups in the ratio of surgeons.(2)Through t test,chi-square test and non-parametric test,it was concluded that the intraoperative blood loss,operation time and warm ischemia time in the MR-assisted group were less than that in the traditional robotic surgery group,and the difference was statistically significant.(3)One patient in MR assisted group had postoperative leakage of urine(Clavien Dindo grade III).One patient in traditional robot operation group underwent radical nephrectomy on the day of operation due to postoperative hemorrhagic shock and was transferred to ICU(Clavien Dindo grade IV).One patient received 4U transfusion due to continuous decrease of hemoglobin(Clavien Dindo grade II),postoperative pathological diagnosis:in MR assisted group,there were 18 cases of clear cell carcinoma,2 cases of oncocytoma,1 case of chromophobe cell tumor,1 case of synovial sarcoma,2 cases of angiomyolipoma and 1 case of renal epithelioid hemangioblastoma;in traditional robot operation group,there were 22 cases of clear cell carcinoma,1 case of renin tumor and 2 cases of Renal angioid perivascular tumor,all of which were not found recurrence or distant metastasis.Conclusions:MR may be used as a good tool for complex renal tumors,which is hoped to be used as an important reference before surgery.