RT Journal Article SR Electronic T1 Anaesthetic challenges for a patient with huge superior mediastinal mass in prone position JF BMJ Case Reports JO BMJ Case Reports FD BMJ Publishing Group Ltd SP e242118 DO 10.1136/bcr-2021-242118 VO 14 IS 4 A1 Tat Boon Yeap A1 Ming Kai Teah A1 Astrie Kamalia Mohd Ramly A1 Chin Pei Bong YR 2021 UL http://casereports.bmj.com/content/14/4/e242118.abstract AB Anaesthesia for patients with huge mediastinal mass is very challenging due to the cardiorespiratory embarrassment that may occur. We present a patient with this condition, which was complicated by total airway obstruction, intraoperatively. We discuss the importance of patient positioning and the role of spontaneous ventilation.