[第511例:严重的贫血与增加的环状 sideroblasts]
1Department of Hematology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.
Zhonghua nei ke za zhi
|September 4, 2025
概括
严重的贫血最初被误诊为骨髓发育综合征, 但实际上是酒精诱导的 sideroblastic贫血. 维生素B6治疗迅速解决了这种情况,强调需要排除可逆原因.
科学领域:
- 血液学
- 内部医学
- 毒理学
背景情况:
- sideroblastic 贫血 (SA) 是一组疾病,其特点是红色素前体中无效的红色素形成和铁积累.
- 具有环状 sideroblasts (MDS-RS) 的骨髓发育综合征是SA的常见原因,通常与SF3B1等体质突变相关.
- 酒精滥用是已知的,但有时被忽视的,可逆性SA的原因.
研究的目的:
- 报告一个最初被诊断为MDS-RS的严重贫血病例, 最终归因于酒精诱导的SA.
- 强调包括酒精消耗在内的完整病史在SA诊断中的重要性.
- 讨论非克隆性SA的诊断挑战和治疗影响.
主要方法:
- 包括骨髓形态,SF3B1遗传测试,铁代谢研究和肝脏MRI在内的全面诊断工作.
- 对于被认为是MDS-RS的luspatercept初始治疗.
- 随后的维生素B6疗法在发现严重的酒精消费史.
- 监测血红蛋白水平和临床反应.
主要成果:
- 患者出现严重的贫血 (HGB 35 g/ L) 和24%的环状 sideroblasts,最初用luspatercept作为MDS- RS进行治疗.
- 在使用luspatercept10个月后出现复发. 追溯历史显示大量的酒精消费.
- 维生素B6治疗导致血红蛋白迅速且持续增加 (10天内85g/ l,1个月内134g/ l),证实了酒精诱导的SA.
- 肝脏MRI显示显著的铁过载 (T2* 1.1毫秒).
结论:
- 在缺乏克隆证据的 sideroblastic 贫血中,必须排除可逆性原因,如酒精,才能将其归因于MDS.
- 卢斯帕特塞普特显示过渡性疗效,但可能掩盖非克隆性SA的潜在病因.
- 酒精SA需要仔细监测过量的铁和及时的铁化疗法,以防止肝脏并发症.
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