Would you favor post op radiation therapy for soft tissue sarcoma if a positive margin were still expected despite pre-op radiation?

1. The key question here is whether you are dealing with tumor ON the plexus, expected to result in a microscopically positive (R1) margin, or tumor IN the plexus, expected to result in gross residual disease (R2).
2. If tumor is ON the plexus, a planned R1 margin on a critical structure, with addition o...

In responding to this question, we are limited by the following:

1. Absence of MRI images.
2. Specific information about size, histology, and tumor grade.
3. No information regarding patient's age, other morbidity, or relevant past medical history. Although I assume the patient in question is an adult if thi...