SBRT in non-spine bone metastases: a literature review.
Abstract
Stereotactic Body Radiotherapy (SBRT) is a technique for delivering high doses of radiation to tumors while preserving the normal tissues located around this area. Bone metastases are frequent in cancer patients. They can be distressingly painful or may cause pathological fractures. Radiation therapy is a fundamental aspect of treatment for bone metastases. The objective of this study is to analyze the literature on non-spine bone metastasis treated with SBRT, including immobilization, volume delineation, dose and fractionation, local control, side effects, and assessment of response after treatment. Full-text articles written in English language and published in the last 10 years were included in this review and were accessible on PubMed and MEDLINE. We examined 78 articles. A total of 40 studies were included in this review. Most were retrospective studies. The articles included were evaluated for content and validation. The immobilization systems and imaging tests used for tumor delimitation were variable between studies. The use of CTV (Clinical Target Volume) has not been defined. Doses and fractions were variable from 15 to 24 Gy/1 fraction to 24-50 Gy in 3-5 fractions, with local control being around 90% with a low rate ...Continue Reading
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