title: Primary carcinoma of the trachea: mixed squamous and oat cell type.
mesh_terms: D018288:Carcinoma, Small Cell / Q000473:pathology*; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D014134:Tracheal Neoplasms / Q000473:pathology*