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巨大な大動脈ラムルの増殖: 胸痛の異常な原因

Carl-Mattheis Wahl¹, Ralf Günzinger¹, Maria-Beatrix Weber²

¹Department of Cardiovascular Surgery, Institute Insure, TUM University Hospital German Heart Center, TUM School of Medicine & Health, Technical University of Munich, Munich, Germany.

JACC. Case reports

|February 12, 2026

まとめ

ラムルの分泌物 (Lambl's excrescences, LE) は,繊維状の弁状の糸で,冠動脈を阻害することで,胸痛を引き起こす可能性があります. 症状を和らげ,合併症を予防するために,大型または移動性LEsの外科的除去が推奨されます.

科学分野:

心臓病学心臓病学
心臓外科手術について
バルブ性心疾患バルブ性心疾患とは

背景:

Lambl's excrescences (LEs) は,典型的には,小さな,無症状の繊維状弁状の鎖である.
大規模または移動可能なLEsは,栓塞性または閉塞性心血管イベントにつながる可能性があります.

研究の目的:

ダイナミックな冠動脈のオスティアル阻害を引き起こす巨大ランブルの分泌物の症例を報告する.
胸痛の微分診断においてLEsを考慮する重要性を強調する.

主な方法:

再発性アンギナを患っている59歳の男性は,冠動脈血管図とエコーカルディオグラフィーを受けた.
エコーカルディオグラフィーでは,左冠動脈のオスティウムに転入する移動性繊維状の構造が特定されました.
患者は手術で切除され,ミニスターノトミーによる大動脈弁の置換が成功しました.

主要な成果:

冠動脈血管図では,血動力学的に有意な動脈硬化病変は示されなかった.
エコーカルディオグラフィは20〜30ミリメートルの繊維状の構造を明らかにし,中程度の大動脈反発を引き起こしました.
ヒストオパトロジーは巨大なラムルの増殖を確認し,症状は手術後に解消した.

結論:

巨大または超移動性LEsは,冠動脈骨を阻害することによって,動脈硬化性アンギナを模倣することができます.
マルチモダリティイマージングは,診断に不可欠です.
症状のあるまたは高リスクのLEsでは,不全性または栓塞性イベントを予防するために,早期の外科介入が推奨されます.

キーワード:

大動脈弁のバルブです.胸の痛み胸の痛み胸の痛み冠動脈血管図 (Coronary Angiography) は,冠動脈血管図 (Coronary Angiography) を用いて,冠動脈血管図 (Coronary Angiography) を用いて,冠動脈血管図 (Coronary Angiography) を用いて,冠動脈血管図 (Coronary Angiography) を用いて実施している.エコーカルディオグラフィーエコーカルディオグラフィー換気弁の交換について

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