The safety and efficiency of retroperitoneal laparoscopic adrenalectomy via extra and intra perinephric fat approaches: a retrospective clinical study.

RLA is a safe and effective procedure both via extra perinephric fat and intra perinephric fat approaches. IPEA is superior to EPEA in terms of peritoneal injury and duration. The choice may mainly depend on the experience of the surgeon, the characteristics of the adrenal tumor and the nature of the perinephric fat.