ヘリシウムAに関連した片側性筋炎として現れる局所化免疫複合体性小血管炎
Mariam Zeidan1, Rita Abou Zeid2, Hajar Alhusani2
1Faculty of Medicine, American University of Beirut, Beirut, LBN.
Cureus
|January 7, 2026
まとめ
本症例研究は、ヘリシウムAウイルス(HAV)感染によって引き起こされた、脚筋に影響を及ぼす片側性免疫複合体性小血管炎(ICSVV)の最初の症例を詳述する。迅速な免疫抑制療法により寛解に至り、早期診断の重要性が強調された。
背景:
- 免疫複合体性小血管炎(ICSVV)は、小血管への免疫複合体の沈着を特徴とし、炎症と壊死を引き起こす。
- ヘリシウムAウイルス(HAV)は、ヘリシウムBおよびCとは異なり、血管炎のまれな誘因である。
- 血管炎性筋炎、すなわち血管炎による筋肉の炎症は、通常、両側性および対称性であり、片側性または筋肉限局性の疾患の報告は少ない。
結論:
- 本症例は、生検で確認された片側性免疫複合体性血管炎性筋炎とHAV感染との最初の関連性を示す。
- 全身性炎症を伴う限局性四肢腫脹の鑑別診断において、血管炎性筋炎を考慮することの重要性を強調する。
- このまれな病状における良好な転帰のためには、早期の免疫抑制療法が不可欠である。
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