title: Pneumopyopericardium due to perforation of the stomach in a patient with lymphoma.
mesh_terms: D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000150:complications* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D011026:Pneumopericardium / Q000209:etiology* / Q000473:pathology; D013492:Suppuration