title: Epithelial-myoepithelial tumor of the bronchus.
abstract: A primary bronchial tumor with a histological pattern similar to that of epithelial-myoepithelial tumor of the salivary gland is reported in a 55-year-old woman. The tumor was well delimited, although not encapsulated, and showed a polypoid growth. The tumor was composed of two types of neoplastic cells: epithelial cells displaying tubules and myoepithelial cells that either formed compact masses or surrounded the tubular formations. Immunohistochemical study confirmed positive immunoreaction to both high- and low-molecular-weight cytokeratins in the epithelial cells and positive immunoreaction to vimentin, S-100 protein, and myosin in the myoepithelial cells.
authors.affiliation: Department of Morphology, School of Medicine, Autonomous University, Madrid, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Nistal
authors.forename: M
authors.initials: M
authors.lastname: García-Viera
authors.forename: C
authors.initials: C
authors.lastname: Martínez-García
authors.forename: R
authors.initials: R
authors.lastname: Paniagua
mesh_terms: D001984:Bronchial Neoplasms / Q000737:chemistry / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007633:Keratins / Q000032:analysis; D008875:Middle Aged; D009208:Myoepithelioma / Q000737:chemistry / Q000473:pathology*; D009218:Myosins / Q000032:analysis; D009375:Neoplasms, Glandular and Epithelial / Q000737:chemistry / Q000473:pathology*; D009418:S100 Proteins / Q000032:analysis; D012468:Salivary Gland Neoplasms / Q000473:pathology; D014746:Vimentin / Q000032:analysis
chemical_list: D009418:S100 Proteins; D014746:Vimentin; D007633:Keratins; D009218:Myosins