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好酸球性腹水:腹膜疾患における見過ごされがちな病態
Rishi Chowdhary1, Zainab Awan2, Param Darpan Sheth3
1Department of Medicine, MetroHealth Medical Center, 2500 MetroHealth Drive, Cleveland, OH, 44109, USA. rxc822@case.edu.
Digestive diseases and sciences
|February 24, 2026
まとめ
好酸球性腹水(EA)はまれな病態であり、しばしば誤診される。迅速なコルチコステロイド治療は有効であるが、診断と再発に関してはさらなる研究が必要である。
科学分野:
- 消化器病学と免疫学
背景:
- 好酸球性腹水(EA)は、好酸球が豊富な腹水を特徴とするまれな病態であり、しばしば誤診される。好酸球性胃腸炎(EGE)と関連することが多く、30〜50歳の成人に見られる。
研究 の 目的:
- 本レビューは、好酸球性腹水に関する現在の知識を統合する。病因、病態生理、診断上の課題、治療戦略に焦点を当て、知識のギャップを特定する。
主な方法:
- PubMed、SpringerLink、Web of Scienceを用いて、2000年から2025年までの研究のナラティブレビューを実施した。腹水中の好酸球が10%以上、画像検査、治療転帰を伴う組織病理学的に確認されたEAを含む研究を対象とした。
主要な成果:
- EAの病態には、IL-5を介した消化管漿膜への好酸球浸潤が関与する。診断的特徴には、腹水中の好酸球優位、末梢血好酸球増多、CT検査での腸壁肥厚が含まれる。コルチコステロイドは、2週間以内に患者の80%で寛解を達成する。
結論:
- 好酸球性腹水の診断には、臨床的な疑いを高めることが不可欠である。今後の研究は、非侵襲的診断、生物製剤とステロイドの比較、難治性症例における遺伝的要因の探索に焦点を当てるべきである。
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