Radiation therapy plays an important role in soft tissue sarcoma management when surgical margins are incomplete, improving local tumor control and long-term welfare outcomes.
The welfare calculus for radiation therapy in sarcoma management must account for both the treatment burden and the benefit of preventing local recurrence. Repeated anesthesia, travel to a radiation facility, and acute radiation effects create genuine welfare costs. However, avoiding local recurrence — which typically requires more aggressive surgery with greater functional impact — provides significant long-term welfare benefit. Pre-surgical planning that identifies candidates for post-operative radiation enables more conservative surgical margins in some cases, reducing immediate surgical welfare costs. The decision requires individualized assessment of tumor grade, location, and the dog's overall condition.