- Definition: A modern, precise form of radiation targeting only initially involved lymph node regions with margins.
- Use: Commonly used in early-stage Hodgkin lymphoma or bulky disease after chemotherapy.
- Pros:
- Reduces radiation exposure to healthy tissues
- Lowers risk of long-term toxicities (e.g., secondary cancers, cardiotoxicity)
- Pharmacist role:
Synonyms
Involved-Site Radiation Therapy , ISRT

