Demographics and characteristics
| Variable | Counts (percentages) |
| Sex | |
| Male | 14 (47%) |
| Female | 16 (53%) |
| Age at diagnosis (years)* | 6.5 (0.7–16.7) |
| Location | |
| Femur only | 14 (47%) |
| Humerus only | 8 (27%) |
| Tibia only | 5 (17%) |
| Tibia+femur | 2 (7%) |
| Fibula | 1 (3%) |
| Additional skeletal lesions | |
| Skull/maxillofacial | 5 (17%) |
| Pelvis | 4 (13%) |
| Vertebrae | 4 (13%) |
| Ribs/sternum | 2 (7%) |
| Clavicle | 1 (3%) |
| Classification | |
| Unifocal | 18 (60%) |
| Multifocal | 12 (40%) |
| Radiographs | |
| Fractures | 4 (13%) |
| Lytic lesions | 22 (73%) |
| Immunopathology | |
| CD1a+ | 23 (77%) |
| CD68+ | 7 (23%) |
| CD207+ | 19 (63%) |
| S100+ | 12 (40%) |
*Data are presented with median (range).