title: An early lesion of pulmonary carcinosarcoma: possible diagnostic problem in frozen section interpretation.
authors.forename: H
authors.initials: H
authors.lastname: Hattori
mesh_terms: D000368:Aged; D002296:Carcinosarcoma / Q000473:pathology*; D003937:Diagnosis, Differential; D005629:Frozen Sections; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008297:Male