Division of Radiation Oncology, Cancer Centre of Southeastern Ontario, Queen's University, Kingston, Canada.
Department of Radiation Oncology, Americas Centro de Oncologia Integrado, Rio de Janeiro, Brazil.
Nat Rev Urol. 2021 Nov;18(11):669-685. doi: 10.1038/s41585-021-00498-6. Epub 2021 Aug 13.
External beam radiotherapy is an effective curative treatment option for localized prostate cancer, the most common cancer in men worldwide. However, conventionally fractionated courses of curative external beam radiotherapy are usually 8-9 weeks long, resulting in a substantial burden to patients and the health-care system. This problem is exacerbated in low-income and middle-income countries where health-care resources might be scarce and patient funds limited. Trials have shown a clinical equipoise between hypofractionated schedules of radiotherapy and conventionally fractionated treatments, with the advantage of drastically shortening treatment durations with the use of hypofractionation. The hypofractionated schedules are supported by modern consensus guidelines for implementation in clinical practice. Furthermore, several economic evaluations have shown improved cost effectiveness of hypofractionated therapy compared with conventional schedules. However, these techniques demand complex infrastructure and advanced personnel training. Thus, a number of practical considerations must be borne in mind when implementing hypofractionation in low-income and middle-income countries, but the potential gain in the treatment of this patient population is substantial.
外照射放疗是局部前列腺癌(全世界最常见的男性癌症)的有效治愈性治疗选择。然而,常规分割的治愈性外照射放疗疗程通常为 8-9 周,这给患者和医疗保健系统带来了巨大负担。在低收入和中等收入国家,这个问题更加严重,因为那里的医疗保健资源可能稀缺,患者资金有限。试验表明,低分割放疗方案与常规分割治疗之间存在临床平衡,使用低分割可以大大缩短治疗时间。低分割方案得到了用于临床实践的现代共识指南的支持。此外,几项经济评估表明,与常规方案相比,低分割治疗具有更高的成本效益。然而,这些技术需要复杂的基础设施和高级人员培训。因此,在低收入和中等收入国家实施低分割时需要考虑许多实际问题,但对这些患者人群进行治疗的潜在收益是巨大的。