Applicability and outcome of laparoscopic adrenalectomy for large tumours.

Laparoscopic adrenalectomy has been shown to be as safe and effective as conventional open surgery for small and benign adrenal lesions. With increasing experience with laparoscopic adrenalectomy, this approach has become the procedure of choice for the majority of patients requiring adrenalectomy. In our department, from 2011 to 2016, a total of 28 patients with 31 adrenal tumours underwent laparoscopic adrenalectomy regardless of tumour size. Our policy in the department is to exclude adrenal tumours that are potentially malignant or metastatic adrenal tumours for laparoscopic resection. In this a retrospective study, we divided patients into two groups according to tumour size: < 5 or ≥ 5 cm, which was considered as the definition of large adrenal tumours. We compared demographic data and per- and postoperative outcomes. There was no statistical difference between the two groups for per-operative complications (16,6% vs 18,75% , P = 0.71), postoperative complications (16,6% vs 18,75% , P = 0.71), postoperative length of hospital stay (5 vs 8 days P = 0.40), mortality (0% vs 0%) or oncologic outcomes: recurrence and metastasis (8.3% vs 6.25% P = 0.70). The only statistical difference was the operating time, at a mean (SD) 194 (60) vs 237 (71) min (P = 0.039) and the conversion rate (0% vs 12.5% P < 0.01). Laparoscopic adrenalectomy can be done for all patients with adrenal tumours regardless of tumour size, even it needs more time for large tumour but appears to be safe and feasible when performed by experienced surgeons.