I would like to ask anesthesiologists or clinicians who have experienced anesthesia mumps. Was there a case in which the swelling of the parotid gland is associated with a retrograde insufflation of air in the Stensen’s duct and the parotid gland (pneumoparotid)? If you know the literature on anesthesia mumps confirmed by CT as pneumoparotid, I would appreciate it if you could let me know.