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Updated: Oct 21, 2025

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
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A Giant Left Circumflex Artery Aneurysm with Thrombosis Formation Presenting as a Left Atrioventricular Groove Mass

Reza Mohseni Badalabadi1, Ali Hosseinsabet1, Abbas Salehi Omran2

  • 1Department of Cardiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran.

Journal of Cardiovascular Echography
|September 6, 2021
PubMed

Insights

A coronary artery aneurysm, a dilation of a coronary artery, can present as a mass in the atrioventricular groove. This finding, especially with thrombosis, requires clinical attention for accurate diagnosis.

Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Coronary artery aneurysms are defined by significant dilation compared to normal segments.
  • Patients with prior cardiac surgeries may present with complex cardiac findings.

Observation:

  • Echocardiography revealed a mass with an echolucent center in the atrioventricular groove.
  • Further transesophageal echocardiography identified a mass suggestive of left circumflex artery aneurysmal dilation with thrombosis.

Findings:

  • Coronary artery computed tomography angiography confirmed the presence of a coronary artery aneurysm with thrombosis.
  • The mass in the atrioventricular groove was indicative of a thrombosed left circumflex artery aneurysm.

Implications:

  • Echocardiographic detection of an atrioventricular groove mass warrants consideration of coronary artery aneurysm with thrombosis.
  • This highlights the importance of advanced imaging for diagnosing complex coronary artery pathologies.

Keywords:
Coronary aneurysmechocardiographyleft circumflex artery

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