title: Extra-axial chordoma. Report of a case with immunohistochemical study.
abstract: A case of extra-axial chordoma arisen in the soft tissues of the posterior thoracic wall is reported. Immunohistochemistry showed coexpression of low molecular weight keratins, vimentin and S-100 protein in neoplastic cells. Although rare, examples of chordomas developing in extra-axial locations are reported in the literature and need be differentiated from other tumors that can mimic their histopathological features, such as myxoid chondrosarcomas.
authors.affiliation: Istituto di Anatomia Patologica, Università di Modena, Italy.
authors.forename: A M
authors.initials: AM
authors.lastname: Cesinaro
authors.forename: A
authors.initials: A
authors.lastname: Maiorana
authors.forename: G
authors.initials: G
authors.lastname: Collina
authors.forename: R A
authors.initials: RA
authors.lastname: Fano
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D002813:Chondrosarcoma / Q000175:diagnosis; D002817:Chordoma / Q000737:chemistry / Q000175:diagnosis / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007633:Keratins / Q000032:analysis; D009418:S100 Proteins / Q000032:analysis; D013899:Thoracic Neoplasms / Q000737:chemistry / Q000175:diagnosis / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor; D009418:S100 Proteins; D007633:Keratins