title: Bilateral hilar enlargement as a presenting sign of multiple primary bronchogenic carcinoma.
abstract: An asymptomatic patient presented with a chest roentgenogram showing bilateral hilar enlargement compatible with stage II sarcoidosis. However, evaluation revealed double primary bronchogenic carcinoma. A possible pitfall in the non-pathologic diagnosis of sarcoidosis and the implications of double primary bronchogenic carcinoma are discussed.
mesh_terms: D002283:Carcinoma, Bronchogenic / Q000175:diagnosis* / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012507:Sarcoidosis / Q000175:diagnosis / Q000000981:diagnostic imaging