Yamada Saeko, Yamashita Hiroyuki, Nakano Masahiro, Hatano Hiroaki, Sasaki Toshiharu, Takahashi Yuko, Kaneko Hiroshi
Division of Rheumatic Diseases, National Center for Global Health and Medicine, Japan.
Intern Med. 2018;57(15):2259-2265. doi: 10.2169/internalmedicine.0512-17. Epub 2018 Aug 1.
Thrombotic microangiopathies (TMAs) rarely accompany polymyositis/dermatomyositis. We treated three patients with dermatomyositis combined with TMA. A literature review identified 13 previously reported cases. Exacerbation of myositis at the time of the TMA onset was observed in 62.5% of all patients, suggesting that the TMA onset may be associated with autoantibody production. We also found that cases of TMA with polymyositis/dermatomyositis often had a poor treatment response rate (37.5%). Furthermore, even if treatment was effective, the mortality rate associated with subsequent complications was high, and the survival rate was low (18.8%). Therefore, careful attention should be paid to patient management after TMA treatment.
血栓性微血管病(TMA)很少与多发性肌炎/皮肌炎同时出现。我们治疗了3例皮肌炎合并TMA的患者。文献回顾发现了13例先前报道的病例。在所有患者中,62.5%的患者在TMA发病时出现了肌炎加重,这表明TMA的发病可能与自身抗体产生有关。我们还发现,TMA合并多发性肌炎/皮肌炎的病例治疗有效率往往较低(37.5%)。此外,即使治疗有效,后续并发症相关的死亡率也很高,生存率很低(18.8%)。因此,TMA治疗后应密切关注患者管理。