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| Characteristics | Value |
|---|---|
| Sex, n (%) | |
| Female | 23 (27.71%) |
| Male | 60 (72.29%) |
| Age, n (%) | |
| years ≤ 19 | 67 (80.72%) |
| years >19 | 16 (19.27%) |
| Location of primary tumor, n (%) | |
| Humerus | 4 (4.82%) |
| Radius | 2 (2.41%) |
| Femur | 44 (53.01%) |
| Fibula | 3 (3.61%) |
| Tibia | 30 (36.14%) |
| AJCC stage, n (%) | |
| IIA | 35 (42.2%) |
| IIB | 48 (57.8%) |
| Pathologic subtype, n (%) | |
| OB (Osteoblastic) | 60 (72.29%) |
| CB (Chorndroblastic) | 9 (10.84%) |
| FB (Fibroblastic) | 7 (8.43%) |
| Others | 7 (8.43%) |
