title: A case of spontaneous nonsurgical pneumoperitoneum associated with adenocarcinoma in the esophagogastric junction.
mesh_terms: D000230:Adenocarcinoma / Q000150:complications* / Q000000981:diagnostic imaging; D004943:Esophagogastric Junction; D005260:Female; D006801:Humans; D008875:Middle Aged; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging / Q000209:etiology*; D011859:Radiography; D013274:Stomach Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging