儿科患者的肺毒性治疗全身辐射使用侧向相反场技术治疗的儿科患者
Natalie Boyce1, Safia Ahmed2, W Scott Harmsen3
1Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA.
Pediatric blood & cancer
|April 16, 2025
概括
在全身照射 (TBI) 后,33%的儿科患者出现了肺毒性 (PT). 预防移植对宿主疾病 (GVHD) 和使用低TBI剂量率可以降低PT风险并改善生存率.
科学领域:
- 儿科瘤学 儿科瘤学
- 辐射瘤学 辐射瘤学
- 造血干细胞移植 造血干细胞移植
背景情况:
- 在接受干细胞移植的儿科患者中,在全身辐射 (TBI) 后,肺毒性 (PT) 是一个重大问题.
- 了解PT的发病率和风险因素对于改善患者的治疗结果至关重要.
研究的目的:
- 用横向相反场技术确定治疗全身辐射 (TBI) 的儿科患者肺毒性 (PT) 的发生率和相关因素.
- 评估PT对整体存活时间 (OS) 的影响.
主要方法:
- 对1993-2017年期间接受TBI治疗的61名儿科患者 (≤21岁) 的医疗记录的回顾性审查.
- 记录PT的发病率,移植与宿主疾病 (GVHD) 和其他毒性.
- 分析PT与临床变量之间的关联,使用千平方测试,用Kaplan-Meier方法估计整体存活率 (OS).
主要成果:
- 三年后的操作系统为65%. 在33%的患者中发生PT.
- 在患有GVHD的患者中观察到更高的PT率 (65%对35%,p ≤0.01).
- 较高的TBI剂量率增加了PT风险 (HR = 1.9,p = 0.04),PT与较低的OS相关 (HR = 3.4,p = 0.01).
结论:
- 接受低剂量速率TBI (4.0-10cGy/min) 的队列经历了可接受的PT发病率.
- PT,非传染性PT和肺炎与减少生存时间有显著的相关性.
- 未来的战略应集中在预防GVHD和利用低TBI剂量率来缓解PT和改善结果.
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