title: Parachordoma.
abstract: Parachordoma is a soft tissue tumor that has a light microscopic appearance similar to that of chordoma, and the immunostaining properties of the two tumors are alike. The clinical findings and light microscopy of one case of parachordoma are presented together with ultrastructural observations on this tumor and parachordomas from five additional patients.
authors.affiliation: Department of Pathology, University of Texas M.D. Anderson Cancer Center, Houston 77030.
authors.forename: H J
authors.initials: HJ
authors.lastname: Shin
authors.forename: B
authors.initials: B
authors.lastname: Mackay
authors.forename: H
authors.initials: H
authors.lastname: Ichinose
authors.forename: A G
authors.initials: AG
authors.lastname: Ayala
authors.forename: M M
authors.initials: MM
authors.lastname: Romsdahl
mesh_terms: D000328:Adult; D002817:Chordoma / Q000473:pathology / Q000648:ultrastructure*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007866:Leg / Q000473:pathology*; D008854:Microscopy, Electron; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000648:ultrastructure*