Minimally Invasive Adrenalectomy Results in Equivalent Perioperative Outcomes versus Open Adrenalectomy for Adrenal Mass larger than 6 cm: A retrospective propensity score-matched study

Abstract Introduction The indication for choosing the minimally invasive approach for large adrenal mass remains controversial. This study is to assess perioperative outcomes after minimally invasive adrenalectomy (MIA) versus open adrenalectomy (OA) for adrenal mass ≥ 6 cm. Materials and Methods A cohort of 173 patients underwent adrenalectomy for adrenal mass ≥ 6cm in our urology center between May 2005 and April 2018 was included. MIA was performed in 96 patients, whereas 77 patients underwent OA. We performed a retrospective propensity score-matched study to compare MIA versus OA. Results After propensity score-matched, 58 matched pairs of patients identified from each group. There were no significant differences between the groups in postoperative morbidity (p = 0.146), operative time (p = 0.163), intraoperative hypertension (p = 0.248) and drainage time (p = 0.188). Estimated blood loss, the rate of blood transfusions postoperative hospital stay was less in MIA group (p Conclusions MIA results in equivalent perioperative outcomes compared with OA and is an effective and safe surgical method for patients with an adrenal mass more than 6 cm in diameter.