title: Pathology and classification.
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology; D001984:Bronchial Neoplasms / Q000473:pathology; D002278:Carcinoma in Situ / Q000473:pathology; D018288:Carcinoma, Small Cell / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000473:pathology; D004848:Epithelium / Q000473:pathology; D005088:Exocrine Glands / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000145:classification / Q000473:pathology*; D009093:Mucus; D014944:World Health Organization