Table 2 Characteristics of 29 patients with intracranial hemangiopericytoma receiving post-operative radiotherapy divided by radiotherapy technique
| Â | All patients N (%) | IMRT (11 patients) N (%) | SRS (18 patients) N (%) | P value |
|---|---|---|---|---|
Age in years | Â | Â | Â | 0.074* |
  > 50 | 13(44.8%) | 7(63.6%) | 6(33.3%) |  |
  < 50 | 16(55.2%) | 4(36.4%) | 12(66.7%) |  |
Sex | Â | Â | Â | 0.316 |
 Male | 14(48.3%) | 4(36.4%) | 8(55.6%) |  |
 Female | 15(51.7%) | 7(63.6%) | 8(44.4%) |  |
Tumor location | Â | Â | Â | 1.000 |
 Supratentorial | 25(84.2%) | 10(90.9%) | 15(83.3%) |  |
 Infratentorial | 4(15.8%) | 1(9.1%) | 3(16.7%) |  |
Pathology grade | Â | Â | Â | 0.316 |
 Grade II | 14(48.3%) | 4(36.4%) | 10(55.6%) |  |
 Grade III | 15(51.7%) | 7(63.6%) | 8(44.4%) |  |
Extent of resection | Â | Â | Â | 0.862 |
 GTR | 26(89.7%) | 10(90.9%) | 16(88.9%) |  |
 STR | 3(10.3%) | 1(9.1%) | 2(11.1%) |  |
Recurrence | Â | Â | Â | 0.228 |
 Yes |  | 3(27.4%) | 9(50%) |  |
 No |  | 8(72.7%) | 9(50%) |  |