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Adult Soft Tissue Sarcoma Treatment (PDQ®): Treatment - Health Professional Information [NCI] - Treatment Option Overview

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Local control of high-grade soft tissue sarcomas of the trunk and the head and neck can be achieved with surgery in combination with radiation therapy.[4] It may be possible to use surgery without PORT in selected cases. For example, a case series was reported from a specialized sarcoma treatment referral center in which 74 selected patients with primary extremity and trunk tumors 5 cm or less in size were found to have no histologic involvement of the surgical margins.[1] They were observed without radiation therapy, and the estimated local recurrence rate after 10 years was 11%.[1][Level of evidence: 3iiiDiv] The role of chemotherapy is not as well defined as is the role of radiation therapy. Because of the evolving nature of the treatment options for this disease, patients should be offered the option of clinical trials when available.

Effective treatment of retroperitoneal sarcomas requires removal of all gross disease while sparing adjacent viscera not invaded by tumor. The prognosis for patients with high-grade retroperitoneal sarcomas is less favorable than for patients with tumors at other sites, partly because of the difficulty in completely resecting these tumors and the dose-limiting toxicity of high-dose radiation therapy on visceral organs.[5,6,7,8]

In the setting of distant metastasis, surgery may be associated with long-term disease-free survival in patients with pulmonary metastasis and optimal underlying disease biology (i.e., patients with a limited number of metastases and slow nodule growth) who have undergone or are undergoing complete resection of the primary tumor.[9,10,11] It is not clear to what degree the favorable outcomes are attributable to the efficacy of surgery or the careful selection of patients based on factors that are associated with less-virulent disease.

Role of Radiation Therapy

Radiation plays an important role in limb-sparing therapy. Pre- and postoperative external-beam radiation therapies (EBRT), as well as brachytherapy, have been shown to decrease the risk of local recurrence. They have not been shown to increase OS but are used to avoid amputation for all but the most locally advanced tumors or for limbs seriously compromised by vascular disease, where acceptable functional preservation is not possible. In the case of EBRT, irradiation of the entire limb circumference is avoided to preserve vascular and nerve structures that are critical to function and preservation of the limb.

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