Abstract
Despite impressive advances in surgery and radiation therapy, the management of patients with retroperitoneal sarcoma remains a therapeutic challenge. Published series of surgical resection alone for retroperitoneal sarcoma have shown poor local control and survival rates. Because of the infiltrative nature of these tumors and their anatomic origin, it is frequently difficult to obtain microscopically clear resection margins. The efficacy of postoperative external-beam irradiation (EBRT) after resection is unclear from published reports. Because of the large size of these tumors, significant volumes of normal tissue (liver, small bowel, stomach, kidney, or spinal cord) may be within the EBRT field, and treatment is frequently limited to 45–50 Gy in 1.8- or 2-Gy fractions. It is not surprising that the local failure rate remains unacceptably high after postoperative irradiation because of the dose limitations of normal tissue to EBRT and the likelihood of at least microscopic residual disease after resection. In an effort to improve the local control and survival in patients with retroperitoneal sarcoma, treatment strategies employing intraoperative electron beam irradiation (IOERT) with preoperative or postoperative EBRT and surgery have been explored. This chapter will summarize relevant data on the role of IOERT in the management of patients with retroperitoneal sarcoma.
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Gieschen, H.L. et al. (1999). Electron or Orthovoltage IORT for Retroperitoneal Sarcomas. In: Gunderson, L.L., Willet, C.G., Harrison, L.B., Calvo, F.A. (eds) Intraoperative Irradiation. Current Clinical Oncology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-59259-696-6_18
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DOI: https://doi.org/10.1007/978-1-59259-696-6_18
Publisher Name: Humana Press, Totowa, NJ
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