title: Constrictive pericarditis presenting as a mediastinal mass.
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D008482:Mediastinum / Q000000981:diagnostic imaging; D010494:Pericarditis, Constrictive / Q000175:diagnosis* / Q000000981:diagnostic imaging; D011859:Radiography