Inclusion Criteria:

- Biopsy proven chordoma. Slides must be reviewed prior to randomization by the
central review pathologist

- Sites: Intercranial (sphenoid, clivus, petrous, basio-occiput) or cervical spine

- Boost target volume less than or equal to 150

- 18 years of age or older

- Karnofsky Performance Status > 50

- Neurologic Function of I or II

- No evidence of metastases

Exclusion Criteria:

- Previous radiation to the head or neck that would compromise the ability to deliver
the prescribed treatment

- Concurrent or prior malignancy unless disease free for 5 or more years

- Evidence of metastatic disease

- Diabetes mellitus

- Major medical illness or psychiatric impairments that in the opinion of the
investigator, will prevent administration or completion of the protocol therapy