TABLE 1.
Demographics and Clinicopathologic Features (n = 973)
| Age | Years |
| Mean | 51.6 ± 18.8 |
| Median | 51 |
| Minimum | 8 |
| Maximum | 93 |
| Characteristic | Percentage (n) |
| Sex | |
| Female | 37.3 (363) |
| Male | 62.7% (610) |
| Race/Ethnicity | |
| White | 86.6 (843) |
| Black | 7.4 (72) |
| Other | 4.9 (49) |
| Unknown | 1.0 (10) |
| Decade | |
| 1970s | 8.2 (80) |
| 1980s | 11.2 (109) |
| 1990s | 19.4 (189) |
| 2000s | 61.2 (595) |
| Tumor grade | |
| Low grade | 63.4 (617) |
| High grade | 16.9 (164) |
| Unknown | 19.7 (192) |
| Histologic subtype | |
| Chondrosarcoma, not otherwise specified | 87.5 (851) |
| Juxtacortical chondrosarcoma | 0.7 (7) |
| Myxoid chondrosarcoma | 5.8 (56) |
| Mesenchymal chondrosarcoma | 2.1 (20) |
| Clear cell chondrosarcoma | 0.5 (5) |
| Dedifferentiated chondrosarcoma | 3.5 (34) |
| Extent of disease | |
| Confined | 13.6 (132) |
| Locally invasive | 58.6 (570) |
| Metastasis | 9.7 (94) |
| Unknown | 18.2 (177) |
| Surgical resection | |
| Yes | 75.2 (732) |
| No | 22.1 (215) |
| Unknown | 2.7 (26) |
| Radiation therapy performed | |
| Yes | 21.3 (207) |
| No | 76.4 (743) |
| Unknown | 2.4 (23) |
| Treatment modality | |
| Surgery + radiation | 12.3 (120) |
| Surgery only | 57.9 (563) |
| Radiation only | 9.0 (88) |
| No therapy | 16.2 (158) |
| Unknown | 4.5 (44) |
| Size (cm) | |
| Mean | 8.7 ± 6.2 |
| Median | 7.5 |