What does this research mean for the field?

Extrinsic compression of the left main coronary artery by an aortic root pseudoaneurysm presents with a dynamic, systole-predominant angiographic hallmark that distinguishes it from fixed atherosclerotic disease and requires multimodality imaging for accurate diagnosis and surgical planning. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To report a rare case of acute coronary syndrome caused by dynamic extrinsic compression of the left main coronary artery by an aortic root pseudoaneurysm following aortic valve replacement.

September 14, 2026European Heart Journal - Case ReportsOpen Access

Dynamic Left Main Occlusion After Aortic Valve Surgery: Recognising Extrinsic Compression by Aortic Root Pseudoaneurysm - A Case Report

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To report a rare case of acute coronary syndrome caused by dynamic extrinsic compression of the left main coronary artery by an aortic root pseudoaneurysm following aortic valve replacement.
Evaluated a 52-year-old male presenting with acute chest pain two months after mechanical aortic valve replacement and aortic root reconstruction for endocarditis.
Conducted diagnostic evaluations including electrocardiography, fluoroscopy, invasive coronary angiography, and computed tomography aortography, followed by quaternary surgical revision.
Coronary angiography demonstrated absent flow in the left anterior descending artery and a pulsatile, systole-predominant left main lesion indicative of extrinsic compression.
Computed tomography identified a 5.2 × 4.4 × 4.0 cm left ventricular outflow tract pseudoaneurysm compressing the left main coronary artery during systole.
The patient underwent successful composite graft replacement and pseudoaneurysm repair without percutaneous stenting, achieving full recovery at four-month follow-up.

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Implication

Case report demonstrates dynamic left main coronary compression from an aortic root pseudoaneurysm after valve surgery, highlighting the need for multimodality imaging to prevent inappropriate...

Cite This Study

Seif et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b2890926e14a848b0ef4 https://doi.org/10.1093/ehjcr/ytag600

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Implication

Case report demonstrates dynamic left main coronary compression from an aortic root pseudoaneurysm after valve surgery, highlighting the need for multimodality imaging to prevent inappropriate...

Dynamic Left Main Occlusion After Aortic Valve Surgery: Recognising Extrinsic Compression by Aortic Root Pseudoaneurysm - A Case Report

Key Points

Discussion

Implication

Cite This Study

Dynamic Left Main Occlusion After Aortic Valve Surgery: Recognising Extrinsic Compression by Aortic Root Pseudoaneurysm - A Case Report

Key Points

Discussion

Implication

Cite This Study

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