Enigmatic chest mass.
D000328:Adult; D000367:Age Factors; D003937:Diagnosis, Differential; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D010496:Pericardium / Q000473:pathology; D011655:Pulmonary Embolism / Q000473:pathology; D011859:Radiography; D012737:Sex Factors; D013724:Teratoma / Q000000981:diagnostic imaging*