title: Mesenchymal chondrosarcoma of the orbit--case report.
abstract: A 20-year-old woman presented with a rare case of intraorbital mesenchymal chondrosarcoma manifesting as a 6-month history of progressive ptosis and exophthalmos of her left eye. Computed tomography and magnetic resonance imaging revealed a partially calcified round mass occupying the postbulbar space. Partial removal of the tumor via a left fronto-orbital approach was performed. The histological diagnosis was mesenchymal chondrosarcoma, and additional intraorbital exenteration was performed. Neither chemotherapy nor radiotherapy was performed. She was free from tumor recurrence at the 6-year follow-up examination. Radical resection, including exenteration if possible, is recommended for intraorbital mesenchymal chondrosarcoma.
authors.affiliation: Department of Neurosurgery, University of Tokyo Hospital, Tokyo, Japan. hanakita-s@umin.ac.jp
authors.forename: Shunya
authors.initials: S
authors.lastname: Hanakita
authors.forename: Kensuke
authors.initials: K
authors.lastname: Kawai
authors.forename: Junichi
authors.initials: J
authors.lastname: Shibahara
authors.forename: Nobutaka
authors.initials: N
authors.lastname: Kawahara
authors.forename: Nobuhito
authors.initials: N
authors.lastname: Saito
mesh_terms: D001763:Blepharoptosis / Q000209:etiology; D018211:Chondrosarcoma, Mesenchymal / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D005094:Exophthalmos / Q000209:etiology; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D018365:Neoplasm, Residual / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D009915:Orbit / Q000473:pathology; D017233:Orbit Evisceration; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery*; D012086:Reoperation; D014057:Tomography, X-Ray Computed