Adjuvant Radiation Therapy of Retroperitoneal Sarcoma: The Role ofIntraoperative Radiotherapy (IORT)

[摘要] Purpose.The purpose is to review the natural history, the clinicopathological prognostic factors, and the role of adjuvant radiation therapy with particular attention to the limited but favorable experience with IORT.Methods.Retroperitoneal sarcomas present a continuing therapeutic challenge to the oncologist. In contrast to sarcomas of the extremity and superficial trunk in which complete resection plus radiation therapy results in excellent local control, sarcomas of the retroperitoneum are difficult to resect and even if completely resected, demonstrate high rates of local relapse, the primary pattern of failure. Due to the proximity of normal organs, the delivery of therapeutic doses of adjuvant external beam radiation therapy is problematic.To deliver adequate doses (>60 Gy) of external beam to most patientswould result in unacceptable toxicity. The therapeutic dilemma is unfortunate and betterstrategies are needed. One attractive approach has been to incorporate intraoperativeradiation therapy (IORT) with maximal resection and external beam radiation.Results and Discussion.A number of institutions have explored thisapproach with encouraging preliminary results.

[学科分类] 肿瘤学