Radiation therapy of epithelioid sarcoma

Area of Science:

• Oncology
• Surgical Oncology
• Radiation Oncology

Background:

• Epithelioid sarcoma is a rare tumor typically affecting distal extremities.
• Local recurrence and regional lymph node metastasis are common challenges.
• The optimal treatment, especially the role of radiation therapy, remains undefined.

Purpose of the Study:

• To evaluate the efficacy of combined surgery and radiation therapy for epithelioid sarcoma.
• To assess local control, survival rates, and limb function preservation.

Main Methods:

• Retrospective analysis of eight epithelioid sarcoma patients treated with surgery and/or radiation.
• Dose and timing of radiation therapy were recorded.
• Follow-up assessed local recurrence, metastasis, and functional outcomes.

Main Results:

• Combined therapy in five patients resulted in four achieving no evidence of disease (NED) at extended follow-up.
• Radiation alone in two patients yielded mixed results, with one achieving local control.
• Four patients with local control avoided amputation, maintaining limb function.

Conclusions:

• Combined modality treatment (surgery and radiation) offers a low rate of local recurrence for epithelioid sarcoma.
• This approach enhances the likelihood of preserving extremity function and cosmesis.
• Radiation therapy plays a crucial role in managing this challenging sarcoma.