title: Low-grade parosteal osteosaracoma of the ulna with dedifferentiation into high-grade osteosarcoma.
abstract: This report describes a low-grade parosteal osteosarcoma of the ulna with dedifferentiation into high-grade osteosarcoma. The clinical, pathological, and imaging findings are described and discussed.
authors.affiliation: Department of Radiology, University of British Columbia, Vancouver, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Partovi
authors.forename: P M
authors.initials: PM
authors.lastname: Logan
authors.forename: D L
authors.initials: DL
authors.lastname: Janzen
authors.forename: J X
authors.initials: JX
authors.lastname: O'Connell
authors.forename: D G
authors.initials: DG
authors.lastname: Connell
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D002471:Cell Transformation, Neoplastic; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D012516:Osteosarcoma / Q000000981:diagnostic imaging / Q000473:pathology*; D018217:Osteosarcoma, Juxtacortical / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D014457:Ulna / Q000000981:diagnostic imaging / Q000473:pathology*