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[Intraoperative radiotherapy in malignant bone tumors]
1Department of Orthopaedic Surgery, Faculty of Medicine, Kyoto University, Japan.
Der Orthopade
|June 1, 1993
Summary
Intraoperative radiation therapy (IORT) combined with chemotherapy effectively treats malignant bone tumors in extremities, showing excellent joint function and an 81% 5-year survival rate. Limb preservation is favored for osteoblastic tumors, while prosthetics are used for osteolytic ones.
Area of Science:
- Orthopedic Oncology
- Radiation Oncology
Context:
- Malignant bone tumors in the extremities require effective treatment strategies.
- Intraoperative radiation therapy (IORT) is a viable option for resectable tumors.
- Chemotherapy plays a crucial role in managing these aggressive cancers.
Purpose:
- To evaluate the efficacy and outcomes of IORT combined with chemotherapy for malignant bone tumors.
- To assess tumor recurrence rates, survival rates, and limb function after IORT.
- To determine the impact of chemotherapy advancements, such as cisplatinum, on treatment outcomes.
Summary:
- IORT using 12-26 MeV electron beams (50-100 Gy) was administered to 41 patients with malignant bone tumors.
- Multifocal bilateral irradiation minimized soft tissue complications.
- Combined therapy resulted in only five tumor recurrences and excellent joint function.
- Introduction of cisplatinum improved the 5-year survival rate to 81%.
Impact:
- IORT combined with chemotherapy offers a promising treatment for malignant bone tumors.
- Treatment allows for limb preservation in osteoblastic tumors and prosthetic replacement in osteolytic tumors.
- Improved survival rates and functional outcomes highlight the effectiveness of this multimodal approach.