title: A man with acute epigastric pain.
authors.affiliation: Accident and Emergency Department, United Christian Hospital, Hong Kong, China. Electronic address: aj12029@gmail.com.
authors.forename: Shing
authors.initials: S
authors.lastname: Ching
authors.affiliation: Accident and Emergency Department, United Christian Hospital, Hong Kong, China.
authors.forename: Ka Hing
authors.initials: KH
authors.lastname: Lee
authors.affiliation: Accident and Emergency Department, United Christian Hospital, Hong Kong, China.
authors.forename: Kai Ming
authors.initials: KM
authors.lastname: Li
mesh_terms: D015746:Abdominal Pain; D000208:Acute Disease; D000368:Aged; D006801:Humans; D008297:Male; D010439:Peptic Ulcer Perforation / Q000000981:diagnostic imaging*; D011859:Radiography