デジタル病理ツールを活用した手湿疹と掌蹠 psoriasis の鑑別:定量的アプローチ
Melissa Sari1, Stefan Schliep1, Anne Petzold1
1Department of Dermatology, Deutsches Zentrum Immuntherapie (DZI), Comprehensive Cancer Center (CCC) Erlangen-EMN, Bavarian Cancer Research Center (BZKF), Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Journal of cutaneous pathology
|February 6, 2026
まとめ
表皮厚および網目隆起形態の定量的解析により、掌蹠 psoriasis と手湿疹を確実に鑑別できる。このデジタル病理アプローチは、これらの困難な皮膚疾患の診断精度を向上させる。
科学分野:
- 皮膚病理学; デジタル病理学; 病理組織学
背景:
- 手湿疹と掌蹠 psoriasis の鑑別は、特徴の重複により診断上の課題となる。; 正確な鑑別は、効果的な治療と管理のために不可欠である。
研究 の 目的:
- 掌蹠 psoriasis と手湿疹を鑑別するための形態学的および免疫組織化学的基準を検証する。; デジタル病理ツール(QuPath、ImageJ)を活用して客観的な評価を行う。
主な方法:
- 組織サンプル(n=142)に対し、H&E染色および免疫組織化学染色(CD3、CD15、CD20、CD123、S100、PHH3)を実施した。; 表皮のセグメンテーション、網目隆起の測定、マーカー定量のためにQuPathを用いたデジタル解析を実施した。; ImageJを用いて、カラー閾値処理による海綿増殖の定量を行った。
主要な成果:
- 乾癬では表皮上網目厚が有意に低かった(p<0.001、AUC=0.72)。; 網目隆起の伸長(p=0.002、AUC=0.704)と幅(p<0.001、AUC=0.698)に明確な違いが見られた。; 乾癬では低顆粒腫(p=0.012、AUC=0.602)が多く、湿疹ではS100+表皮細胞(p=0.013、AUC=0.583)が多かった。
結論:
- 表皮上網目厚および網目隆起形態の定量的評価は、客観的な診断方法を提供する。; デジタル病理は、掌蹠 psoriasis と手湿疹の鑑別の精度を向上させる。; このアプローチは、臨床医がより情報に基づいた診断決定を下すのに役立つ。
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