title: Fundamental differences between direct and metastatic spread clarified with lung cancer.
mesh_terms: D001344:Autopsy; D001980:Bronchi / Q000473:pathology; D001984:Bronchial Neoplasms / Q000473:pathology; D004947:Esophagus / Q000473:pathology; D006801:Humans; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000473:pathology*; D008196:Lymph; D008198:Lymph Nodes / Q000473:pathology; D008482:Mediastinum / Q000473:pathology; D009362:Neoplasm Metastasis; D014132:Trachea / Q000473:pathology; D014134:Tracheal Neoplasms / Q000473:pathology