Burgess Laura, Nguyen Eric, Tseng Chia-Lin, Guckenberger Matthias, Lo Simon S, Zhang Beibei, Nielsen Michelle, Maralani Pejman, Nguyen Quynh-Nhu, Sahgal Arjun
Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
Department of Radiation Oncology, Walker Family Cancer Centre, St. Catharines, Ontario, Canada.
Clin Transl Radiat Oncol. 2023 Dec 18;45:100716. doi: 10.1016/j.ctro.2023.100716. eCollection 2024 Mar.
Radiotherapy is the dominant treatment modality for painful spine and non-spine bone metastases (NSBM). Historically, this was achieved with conventional low dose external beam radiotherapy, however, stereotactic body radiotherapy (SBRT) is increasingly applied for these indications. Meta-analyses and randomized clinical trials have demonstrated improved pain response and more durable tumor control with SBRT for spine metastases. However, in the setting of NSBM, there is limited evidence supporting global adoption and large scale randomized clinical trials are in need. SBRT is technically demanding requiring careful consideration of organ at risk tolerance, and strict adherence to technical requirements including immobilization, simulation, contouring and image-guidance procedures. Additional considerations include follow up practices after SBRT, with appropriate imaging playing a critical role in response assessment. Finally, there is renewed research into promising new technologies that may further refine the use of SBRT in both spinal and NSBM in the years to come.
放射治疗是疼痛性脊柱和非脊柱骨转移瘤(NSBM)的主要治疗方式。从历史上看,这是通过传统的低剂量外照射放疗实现的,然而,立体定向体部放疗(SBRT)越来越多地应用于这些适应症。荟萃分析和随机临床试验表明,SBRT治疗脊柱转移瘤可改善疼痛反应并实现更持久的肿瘤控制。然而,在NSBM的情况下,支持全球采用的证据有限,需要进行大规模随机临床试验。SBRT对技术要求很高,需要仔细考虑危及器官的耐受性,并严格遵守包括固定、模拟、轮廓勾画和图像引导程序在内的技术要求。其他需要考虑的因素包括SBRT后的随访实践,适当的成像在反应评估中起着关键作用。最后,对有前景的新技术的研究重新兴起,这些技术可能在未来几年进一步优化SBRT在脊柱和NSBM中的应用。