Inclusion Criteria:

1. All subjects must have history of histologically confirmed neoplasm or
radiographically-diagnosed AVM. Patients without a prior tissue diagnosis but who
have a radiographically characteristic lesion are eligible if there is consensus
agreement of the diagnosis in the UAB Neuro-oncology Tumor Board.

2. ECOG performance status of less than or equal to 2

3. Age greater than 18

4. Life expectancy greater than 12 weeks

5. Subjects given written informed consent

Exclusion Criteria:

1. Cytotoxic chemotherapy within 7 days of treatment

2. Insufficient recovery from all active toxicities of prior therapies

3. Epidural spinal cord compression requiring immediate neurosurgical decompression. If
a patient requires immediate surgery for neurologic compromise, they may still be
eligible post operatively if tumor was incompletely resected.

4. Patient is non-ambulatory. Optimization of pretreatment neurologic function with
steroids is allowed. Ambulation with assistance of walker or cane is allowed.

5. Patient is pregnant and it is judged by the treating Radiation Oncologist that spinal
radiosurgery would place the fetus in unacceptable danger.