title: Malignant degeneration of an osteochondroma with unusual intra-bursal invasion.
abstract: Multiple hereditary osteochondromatosis is an uncommon autosomal dominant condition in which patients are predisposed to the development of chondrosarcoma. We report a case of a patient who developed a secondary low-grade chondrosarcoma in this setting. The tumor was associated with an unusual multinodular invasive growth pattern into a pre-existing bursa that was present overlying the osteochondroma.
authors.affiliation: Department of Radiology, Vancouver General Hospital (VH&HSC), University of British Columbia, 855 W. 12th Avenue, Vancouver, BC V5Z 1M9, Canada.
authors.forename: C
authors.initials: C
authors.lastname: Martin
authors.forename: P L
authors.initials: PL
authors.lastname: Munk
authors.forename: J X
authors.initials: JX
authors.lastname: O'Connell
authors.forename: M J
authors.initials: MJ
authors.lastname: Lee
authors.forename: B
authors.initials: B
authors.lastname: Masri
authors.forename: N
authors.initials: N
authors.lastname: Wambeek
mesh_terms: D000328:Adult; D002061:Bursa, Synovial / Q000473:pathology; D002813:Chondrosarcoma / Q000175:diagnosis* / Q000473:pathology; D005097:Exostoses, Multiple Hereditary / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009361:Neoplasm Invasiveness; D012782:Shoulder; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology; D014057:Tomography, X-Ray Computed