Stereotactic Body Radiation Therapy for Spinal Metastases in Favorite Tumors

Inclusion Criteria:

1. WHO scores 0-2;
2. The primary lesion was confirmed by pathology or cytology;
3. The metastatic lesions were diagnosed by imaging(CT,MRI,PET-CT,ECT),or the lesions were confirmed by biopsy;
4. The metastatic lesion was limited in 3 consecutive vertebral bodies;
5. The baseline pain score was ≥5(NRPS) and the use of analgesic drugs was recorded;
6. The enhanced MRI scan of involved vertebral bodies was required in the 2 weeks before radiotherapy;

Adequate bone marrow, hepatic and renal function as assessed by the following laboratory requirements conducted within 7 days of starting study treatment:

1. Leukocytes ≥ 3.0 x109/ L;
2. Absolute neutrophil count (ANC) ≥ 1.5 x109/ L;
3. Platelet count ≥ 100 x109/ L;
4. Hemoglobin (Hb) ≥ 9g/ dL;
5. Total bilirubin ≤1.5 x the upper limit of normal (ULN);
6. Alanine aminotransferase (ALT) ≤ 3 x ULN;
7. Aspartate aminotransferase (AST) ≤ 3 x ULN;
8. Serum creatinine ≤ 1.5 x the ULN;
9. Signed informed consent;

Exclusion Criteria:

1. There were significant changes in the shape of the vertebral body (the height of the vertebral body was compressed≥ 50%) or the vertebral body was unchanged but the volume of the dissolving bone was≥ 50% and could lead to serious bone adverse events;
2. There were \>3 consecutive vertebral bodies involved;
3. Spinal cord compression has occurred;
4. The gap between tumor and spinal cord was less than 3mm;
5. The metastatic area previously received radiation;
6. Pregnant and Nursing women;
7. Uncontrolled co-morbid illnesses;

9.refused to signed informed consent;