| Histological types | Topography | TotaI | % | ||||
| Maxillo-facial | Lowerlimbs | Spine and ribs | Pelvis | Upperlimbs | |||
| Burkitt’slymphoma | 81 | 1 | 7 | 0 | 0 | 89 | 39.0 |
| Osteosarcoma | 5 | 39 | 4 | 2 | 1 | 51 | 22.4 |
| NHL with large cell | 13 | 0 | 8 | 3 | 1 | 25 | 11.0 |
| Chondrosarcoma | 5 | 2 | 8 | 2 | 0 | 17 | 7.5 |
| Rhabdomyosarcoma | 1 | 4 | 1 | 1 | 0 | 7 | 3.1 |
| Multiplemyeloma | 1 | 0 | 12 | 1 | 0 | 14 | 6.1 |
| Plasmocytoma | 1 | 0 | 4 | 1 | 0 | 6 | 2.6 |
| Ewing’ssarcoma | 0 | 3 | 0 | 0 | 1 | 4 | 1.8 |
| Fibrosarcoma | 0 | 2 | 0 | 1 | 1 | 4 | 1.8 |
| NHL withsmollcell… | 1 | 0 | 1 | 1 | 0 | 3 | 1.3 |
| Indifferenciatesarcoma | 1 | 1 | 0 | 0 | 1 | 3 | 1.3 |
| Synovialosarcoma | 0 | 2 | 0 | 0 | 0 | 2 | 0.9 |
| Neuroblastoma | 1 | 1 | 0 | 0 | 0 | 2 | 0.9 |
| Total | 111 | 55 | 45 | 12 | 5 | 228 | 100 |