Background Pneumoparotid is a rare cause of parotid gland swelling. It is due to reflux of air through Stensen’s duct into the parenchyma of the parotid gland. Case presentation A case of self-induced pneumoparotid in a 12-year-old boy is reported. The diagnosis was primarily considered after careful history taking with special attention on the patient’s habits, and it was confirmed by computed tomography. Conclusion Pneumoparotid is a rare but well-documented clinical entity. It should be included in the differential diagnosis of parotid gland swelling.

Combined with a specific case, CT diagnosis of biliary-intestinal fistula with gallstone intestinal obstruction was analyzed. It was concluded that abdominal plain film was used to diagnose gallstone intestinal obstruction. The key is to observe whether there are positive stones and pneumogallstone in the intestine. The specific imaging features can be obtained by CT diagnosis of cholecystoenteric fistula and surgical treatment of laparoscopic cholecystocolonic fistula.