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Salvage radiotherapy for oligometastases of localized abdominal/pelvic lymph nodes:Expectations for survival improvement by high dose setting Makoto Ito 1 1Department of Radiology Aichi Medical University Hospital Keyword: 少数個再発 , オリゴメタスタシス , 救済照射 pp.1099-1105
Published Date 2020/9/10
DOI https://doi.org/10.18888/rp.0000001386
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Retrospective analyses were performed for 113 patients who had 1-5 abdominal/pelvic lymph node oligometastases and received salvage radiotherapy. Using the equivalent dose in 2 Gy fractions(EQD2)at D50%, EQD2≥60 Gy was defined as the high-dose radiotherapy. The rate of 2-year overall survival(OS)was 63.1%, and that of local control(LC)59.7%. Solitary oligometastasis was significantly associated with favorable OS, and high-dose radiotherapy with LC. Whereas high-dose radiotherapy did not significantly improve OS in the entire cohort, it did in the subgroup of solitary oligometastasis. No significant association between the irradiation dose and adverse event incidence was found.


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電子版ISSN 印刷版ISSN 0009-9252 金原出版

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