Chordoma.
D000368:Aged; D002817:Chordoma / Q000532:radiotherapy / Q000601:surgery*; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008297:Male; D012445:Sacrococcygeal Region; D013125:Spinal Neoplasms / Q000532:radiotherapy / Q000601:surgery*