Table 2.
Recommended doses in 1.8–2 Gy fractions in definitive radiotherapy for chondrosarcoma. Based on [141,142,143].
| Recommendations | Sequence | Microscopically Positive Margins | Macroscopically Positive Margins | Unresectable Tumors |
|---|---|---|---|---|
| National Comprehensive Cancer Network | perioperative | preoperative: 19.8–50.4 Gy boost: up to 70 Gy |
preoperative: 19.8–50.4 Gy boost: up to 72–78 Gy |
not applicable |
| postoperative | 70 Gy | >70 Gy | >70 Gy | |
| Scandinavian Sarcoma Group | postoperative | 56–62 Gy | 64–70 Gy | ≥70 Gy |
| Spanish Sarcoma Group | postoperative | >60 Gy | >60 Gy | >60 Gy 40–70 Gy * |
* Described as palliative radiotherapy.