Radiation of extremity lesions, a key component of limb-sparing therapy, presents particular challenges, with signiﬁcant risks of toxicities. We sought to explore the eﬃcacy of intraoperative radiation therapy (IORT) in the treatment of soft tissue sarcomas of the extremities.
METHODS AND MATERIALS
Between 1995 and 2001, 17 patients received IORT for soft tissue sarcomas of the extremities. Indications for IORT included recurrent tumors in a previously radiated ﬁeld or tumors adjacent to critical structures.
Gross total resections were achieved in all 17 patients. Two patients experienced locoregional relapses, six patients recurred at metastatic sites, and one patient died without recurrence. Thirty-six month estimates for locoregional control, disease free sur-vival, and overall survival were 86%, 50%, and 78%, respectively. IORT was extremely well tolerated, with no toxicities referable to IORT.
For patients with soft tissue sarcomas of the extremities, IORT used as a boost to EBRT provides excellent local control, with limited acute toxicities.