title: [Hollow pulmonary cancers. 2 cases and their practical teachings].
mesh_terms: D002277:Carcinoma; D002283:Carcinoma, Bronchogenic; D006801:Humans; D008175:Lung Neoplasms; D008499:Medical Records
keywords: CARCINOMA, BRONCHOGENIC/case reports; LUNG NEOPLASMS/case reports