Chordoma: case report.
D000368:Aged; D002817:Chordoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D012447:Sacrum / Q000473:pathology* / Q000601:surgery; D013125:Spinal Neoplasms / Q000473:pathology* / Q000601:surgery