[Trapped air sign in the stomach].
D000328:Adult; D002648:Child; D005260:Female; D005767:Gastrointestinal Diseases / Q000000981:diagnostic imaging; D006801:Humans; D008107:Liver Diseases / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging; D011708:Pylorus / Q000000981:diagnostic imaging*; D011859:Radiography