| Summary: | Abstract Background To compare the perioperative outcomes and safety of transperitoneal laparoscopic adrenalectomy with those of retroperitoneal laparoscopic adrenalectomy for patients with pheochromocytoma. Methods We searched PubMed, EMBASE and the Cochrane Central Register for studies from 1999 to 2019 to assess the perioperative outcomes and safety of transperitoneal laparoscopic adrenalectomy and the retroperitoneal approach for laparoscopic adrenalectomy in patients with pheochromocytoma. After data extraction and quality assessments, we used RevMan 5.2 to pool the data. Results Four retrospective studies were obtained in our meta-analysis. Patients who underwent retroperitoneal laparoscopic adrenalectomy were associated with shorter operative time (WMD: 34.91, 95% CI: 27.02 to 42.80, I2 = 15%; p < 0.01), less intraoperative blood loss (WMD: 139.32, 95% CI: 125.38 to 153.26, I2 = 0, p < 0.01), and a shorter hospital stay (WMD: 2, 95% CI: 1.18 to 2.82, I2 = 82%, p < 0.01) than patients who underwent transperitoneal laparoscopic adrenalectomy. No significant differences were found in the complication rate (OR: 1.58, 95% CI: 0.58 to 4.33, I2 = 0; p = 0.38) or in the incidence of hemodynamic crisis (OR: 0.74, 95% CI: 0.19 to 2.94, p = 0.67) between the two groups. Conclusion Retroperitoneal laparoscopic adrenalectomy could achieve better perioperative outcomes than the transperitoneal approach for patients with pheochromocytoma.
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