title: Emphysema, an early roentgen sign of bronchogenic carcinoma.
mesh_terms: D001980:Bronchi; D002283:Carcinoma, Bronchogenic; D004646:Emphysema; D006801:Humans; D009369:Neoplasms; D011656:Pulmonary Emphysema
keywords: BRONCHI/cancer; EMPHYSEMA/pulmonary