title: An unusual cause of recurrent chest pain.
mesh_terms: D000208:Acute Disease; D002648:Child; D002908:Chronic Disease; D006801:Humans; D008297:Male; D010146:Pain / Q000209:etiology*; D010493:Pericarditis / Q000209:etiology; D010496:Pericardium / Q000002:abnormalities* / Q000378:metabolism / Q000601:surgery; D010996:Pleural Effusion / Q000209:etiology*; D013902:Radiography, Thoracic; D012008:Recurrence; D013909:Thorax