Mask Phenomenon Following Robot-assisted Prostatectomy: A Rare Complication due to Trendelenburg Position

Injuries caused by position during the perioperative period are one of the risk factors for anesthesia and surgery. However, the Trendelenburg position, which is especially used in robot-assisted urological surgeries, might cause unknown morbidities [1]. Trendelenburg position and pneumoperitoneum together with facial and upper respiratory tract edema might cause venous stasis in the head and neck region [2]. The mask phenomenon is a rare clinical picture that occurs in the facial region in particular, due to laceration in the dermis capillaries caused by increased intrathoracic and intraabdominal pressure [3].