title: Chordoma of the mobile spine. A clinicopathologic analysis of 40 patients.
abstract: BACKGROUND
  Chordomas are lobulated neoplasms composed of physaliphorous cells and their precursors; some have atypical, epithelioid, or spindle cell features. Fewer than one-sixth of chordomas arise in the mobile (cervical, thoracic, or lumbar) spine. Forty-eight percent originate in the sacrococcygeal region and 39% in the sphenoocciput.
  
  
  METHODS
  The study included 40 patients, 27 men and 13 women (2:1), with chordoma of the mobile spine. Their clinical and histopathologic features are described.
  
  
  RESULTS
  Nineteen tumors (48%) were located in the cervical spine, 7 (17%) in the thoracic spine, and 14 (35%) in the lumbar area. Most patients underwent subtotal removal of the tumor and postoperative irradiation. Variations in histologic appearance, including an occasional chondroid background, did not affect biologic behavior. Twenty-three patients (58%) were alive 5 years after surgery. Eventually, 25 patients (63%) died of tumor. Metastasis developed in two patients (5%). In contrast to some other studies metastasis was a rare occurrence.
  
  
  CONCLUSIONS
  Chordoma of the mobile spine is a slow-growing, recurring neoplasm of low metastatic potential that incapacitates by locally aggressive growth.
authors.affiliation: Division of Surgical Pathology, Mayo Clinic, Rochester, Minnesota 55905.
authors.forename: J
authors.initials: J
authors.lastname: Bjornsson
authors.forename: L E
authors.initials: LE
authors.lastname: Wold
authors.forename: M J
authors.initials: MJ
authors.lastname: Ebersold
authors.forename: E R
authors.initials: ER
authors.lastname: Laws
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002817:Chordoma / Q000473:pathology* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D013125:Spinal Neoplasms / Q000473:pathology* / Q000601:surgery