ESTRO 2024 - Abstract Book

S1998

Clinical - Mixed sites, palliation

ESTRO 2024

Figure 1 Predicted probability of grade ≥ 2 GI toxicity as a function of D 0.1cc (BED10) to gastrointestinal organs at risk (GI OAR) and performance status (PS).

Conclusion:

In this phase II study of MRgSABR of oligometastases in the infra-diaphragmatic region, we found a low incidence of severe toxicity despite half of the lesions being within 10 mm of a radiosensitive OAR. GI OAR D 0.1cc , D 1cc , and D 20cc were associated with grade ≥ 2 GI toxicity.