title: Primary intramedullary histiocytic sarcoma.
abstract: Intramedullary primary central nervous system lymphoma (PCNSL) is a rare central nervous system (CNS) malignancy affecting mostly the brain, but it may also involve the leptomeninges, eyes, and spinal cord. A 71-year-old woman presented with back pain and progressive unilateral lower extremity weakness owing to an intramedullary primary histiocytic sarcoma of the spine, a rare PCNSL subtype. To the authors' knowledge, this is the first case of an intramedullary PCNSL caused by histiocytic sarcoma.
authors.affiliation: Department of Neurosurgery, Boston University School of Medicine and Boston Medical Center, Boston, Massachusetts, USA.
authors.forename: Gentian
authors.initials: G
authors.lastname: Toshkezi
authors.forename: Faramarz
authors.initials: F
authors.lastname: Edalat
authors.forename: Carl
authors.initials: C
authors.lastname: O'Hara
authors.forename: Ivana
authors.initials: I
authors.lastname: Delalle
authors.forename: Lawrence S
authors.initials: LS
authors.lastname: Chin
mesh_terms: D000368:Aged; D005260:Female; D054747:Histiocytic Sarcoma / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D020335:Paraparesis / Q000175:diagnosis / Q000209:etiology; D013116:Spinal Cord / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D013120:Spinal Cord Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery; D013904:Thoracic Vertebrae / Q000473:pathology* / Q000601:surgery