The abnormal azygogram--an index of inoperability.
D001401:Azygos Vein / Q000000981:diagnostic imaging*; D002283:Carcinoma, Bronchogenic / Q000601:surgery*; D008175:Lung Neoplasms / Q000601:surgery*; D008479:Mediastinal Neoplasms / Q000175:diagnosis*; D009362:Neoplasm Metastasis / Q000175:diagnosis*; D011859:Radiography