The role of radiotherapy in bone metastases: a critical review of current literature

A Kougioumtzopoulou, A Zygogianni… - European Journal of …, 2017 - Wiley Online Library
A Kougioumtzopoulou, A Zygogianni, Z Liakouli, E Kypraiou, V Kouloulias
European Journal of Cancer Care, 2017Wiley Online Library
Radiotherapy is considered the treatment of choice for painful bone metastases. However,
novel modalities of radiotherapy have emerged in the concept of oligometastasic disease. In
addition, the increase of overall survival of patients with bone metastatic disease in the last
decades due to systemic treatments has issued the silent topic of re‐irradiation. The aim of
this manuscript was to present a current thorough search of relevant literature. Originally,
6,087 articles revealed from PubMed database related to radiotherapy and bone …
Radiotherapy is considered the treatment of choice for painful bone metastases. However, novel modalities of radiotherapy have emerged in the concept of oligometastasic disease. In addition, the increase of overall survival of patients with bone metastatic disease in the last decades due to systemic treatments has issued the silent topic of re‐irradiation. The aim of this manuscript was to present a current thorough search of relevant literature. Originally, 6,087 articles revealed from PubMed database related to radiotherapy and bone metastases. The first objective was to identify prospective randomised phase III studies dealing with bone metastases and which treated primary with radiotherapy. Abstracts and non‐English citations were excluded. Twenty‐three phase III clinical trials, 17 prospective studies and eight meta‐analysis/systemic reviews matching with these criteria, were identified. Eleven randomised studies were comparing single dose fraction to multi‐fraction schedules of radiotherapy. The overall response rates and complete response rates were not significant between the two arms. Re‐irradiations rates were significantly higher for the single dose fraction arms. Stereotactic radiotherapy showed excellent tumour control rates more than 80%. All trials showed the equivalence of either single or multi‐fractionated radiotherapy for metastatic bone lesions. Stereotactic irradiation is feasible and safe for oligometastatic disease. However, it seems that the single fraction of 8 Gy is superior to 4 Gy, in terms of efficacy.
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