前回のシリカ粉露の患者における全身性硬化症の3つの異なる表現

David Landers¹, Davida Hehir², Gráinne Murphy²

¹Department of Rheumatology, Cork University Hospital, Cork, Ireland davidlanders17@gmail.com.

BMJ case reports

|August 20, 2025

まとめ

建築作業員の体内硬化症 (SSc) などの自己免疫疾患を引き起こす可能性があります. これらの事例は,SSc

科学分野:

職業医学
リウマトロジ
免疫学

背景:

系統性硬化症 (SSc) は,線維症と血管異常によって特徴づけられる慢性的な自己免疫疾患である.
エラスマス症候群は希少な疾患で,SScとシリコシスが共存し,しばしばシリカ粉にさらされる.
以前の理解ではエラスマス症候群は主にシリコシスやインタースティシャル肺疾患と関連していました

研究の目的:

大量のシリカ塵にさらされた後にSScと診断された建設労働者の3つの症例を報告する.
シリコシスがない場合でも,シリコシス曝露がSScを誘発する可能性を調査する.
SScの様々な臨床表現と重症性を強調する.

主な方法:

3人の患者の臨床履歴,職業的暴露,診断結果の詳細を記載した症例報告の方法論
レイノ現象,皮膚の厚み,内臓の関わりなど,患者の症状のレビュー.
患者の職業歴と喫煙状況の共通点の分析

主要な成果:

この3人の患者は,重要な職業上のシリカ粉にさらされ,SScと診断されました.
患者様にはSScの症状が様々でしたが,同じ職業と喫煙歴がありました.
患者のうちシリコシスや間隔性肺疾患は認められず,典型的なエラスマス症候群と異なる.

結論:

職場でのシリカ粉への曝露は,感受性の高い個体において全身性硬化症 (SSc) の引き金となる可能性がある.
これらの事例は,SScの現象型と,典型的なエラスマス症候群を超えた環境被曝との潜在的な関連に関する理解を広げています.
この発見は,重度の多臓器関わりがある可能性があるため,SScの診断と管理において職業歴を考慮することの重要性を強調しています.

キーワード:

結合組織疾患皮膚科免疫学

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