Comparison of Laparoscopic and Open Partial Nephrectomy in the Treatment of T1 Renal Tumor:a Systematic Review and Meta-analysis

Abstract Objective:Different surgical approaches may bring different treatment results for one disease.We thus determined to gather the current evidence to evaluate the effect of laparoscopic partial nephrecomy(LPN) and open partial nephrectomy(OPN) in the treatment of T1 renal tumor.Methods:We comprehensively researched PubMed,Embase,Google Scholar and Clinicaltrials.gov to find all referring studies(published between Jan1,2015,and Jan 1,2020 without language restrictions) .We calculated the odds ratios(OR) and standard mean difference(SMD),and analyzed their heterogeneity with RevMan 5.3 software.Results:Six studies were included finally.Comparing open partial nephrectomy, the pooled SMD of operative time was 0.14, (95% confidential index CI = [-0.11, 0.38]), the pooled SMD of estimated blood loss was -0.14, (95% CI = [-0.58, 0.31]), the pooled SMD of ischemia time was 0.57, (95% CI = [-0.02, 1.16]), the pooled SMD of length of stay was -0.55, (95% CI = [-1.12, 0.02]),and the pooled OR of positive margin was 1.02, (95% CI = [0.39, 2.68]),the pooled OR of postoperative complications was 0.74,(95% CI = [0.41, 1.36]). Conclusions:LRN had advantages on decreasing postoperative complications rate but the ischemia time of OPN was much shorter.