title: Lesser sac pneumoperitoneum secondary to perforation of the intraabdominal esophagus.
mesh_terms: D004106:Dilatation; D004931:Esophageal Achalasia / Q000628:therapy*; D004939:Esophageal Perforation / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography