Preoperative vs Postoperative IMRT for Extremity/Truncal STS

Inclusion Criteria:

1. Histologically proven soft tissue sarcoma of the extremity or trunk following review by local reference pathologist.
2. Deemed appropriate for preoperative or postoperative radiotherapy and conservative surgery following patient assessment by a radiation oncologist and surgical oncologist.
3. Lesion is primary or locally recurrent. Patient may have undergone excisional biopsy with positive margins at a referring hospital and are eligible following discussion among the surgical oncologists and radiation oncologists that IMRT is an acceptable treatment for that case.
4. Eastern Cooperative Oncology Group (ECOG) score 0-3
5. Patient is aged 18years or older.
6. Patient is able to provide informed consent
7. Patient is available for treatment and follow-up.

Exclusion Criteria:

1. Benign histology.
2. Prior malignancy within the previous five years or concurrent malignancy with the exception of adequately treated basal cell carcinoma of the skin or carcinoma in-situ of the cervix.
3. Prior radiotherapy to the target site
4. Planned chemotherapy for (neo)adjuvant treatment
5. Conservative surgery to the target site
6. Presence of regional nodal disease or unequivocal distant metastases.
7. Other major medical illness deemed to preclude safe administration of protocol treatment or required follow-up.