title: Changing histology in malignant tumors: diagnostic and therapeutic significance.
authors.forename: M J
authors.initials: MJ
authors.lastname: Matthews
authors.forename: A F
authors.initials: AF
authors.lastname: Gazdar
mesh_terms: D018288:Carcinoma, Small Cell / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000473:pathology; D008223:Lymphoma / Q000473:pathology; D009369:Neoplasms / Q000473:pathology* / Q000628:therapy; D013997:Time Factors