title: Idiopathic right atrial enlargement with pericardial effusion.
mesh_terms: D000328:Adult; D000790:Angiocardiography; D006332:Cardiomegaly / Q000150:complications* / Q000000981:diagnostic imaging; D006325:Heart Atria; D006801:Humans; D008297:Male; D010490:Pericardial Effusion / Q000150:complications* / Q000000981:diagnostic imaging