title: [Primary tumors of the spine. Initial oncologic aspects: epidemiology, anatomo-prognostic and therapeutic classification].
abstract: Primary tumors of the vertebral column are rare: 20 per cent of all primary tumors of the spinal column. The distribution by type of tumor shows that the three most frequent primary tumors considered to be "radio and/or chemo resistant lesions" are the chordoma (15.5 to 24.5%), the chondrosarcoma (20%) and the giant cell tumor (10%). A second group with "chemo and/or radiosensitive lesions" include the Ewing sarcoma, primary lymphoma and plasmocytoma (5%). We consider a third group with the benign tumor: osteochondroma, chondroma, osteoid osteoma, osteoblastoma, aneurysmal bone cyst, hemangioma and eosinophilic granuloma (2 to 3%). The last tumoral group agrees with sarcomatous tumors: osteogenic sarcoma, fibrosarcoma, malignant fibro-histiocytoma, angiosarcoma and hemangio-pericytoma (1 to 3% of primary tumors of the vertebral column); they are most frequently secondary to Paget's disease, giant cell tumor or to radiation therapy and their prognosis is poor.
authors.affiliation: Centre des Tumeurs, C.H.U. de la Pitié-Salpêtrière, Paris.
authors.forename: E
authors.initials: E
authors.lastname: Touboul
authors.forename: A
authors.initials: A
authors.lastname: Khelif
authors.forename: R A
authors.initials: RA
authors.lastname: Guérin
mesh_terms: D006801:Humans; D011379:Prognosis; D013125:Spinal Neoplasms / Q000145:classification / Q000453:epidemiology* / Q000473:pathology
vernacular_title: Les tumeurs primitives du rachis. Aspect oncologique initial: épidémiologie, classification anatomo-pronostique et thérapeutique.