Submitral aneurysm with left atrial communication

Area of Science:

• Cardiology
• Cardiac Surgery
• Medical Imaging

Background:

• Annular sub-mitral aneurysms are uncommon cardiac lesions with diverse causes.
• A sub-mitral membrane may predispose individuals to aneurysm formation.
• These aneurysms originate from the atrioventricular groove, near the mitral valve's mural leaflet.

Observation:

• The case involves a calcified, bi-lobed sub-mitral aneurysm with a left atrial connection.
• Lesions can cause mass effects, mitral regurgitation, and impaired left ventricular function.
• Surgical repair is complex due to proximity to the circumflex artery, atrioventricular junction, and mitral valve.

Findings:

• Computed tomogram angiography is crucial for detailed pre-operative anatomical assessment.
• Understanding the anatomical basis is key to managing these rare aneurysms.
• The report highlights the surgical approach for this specific calcified variant.

Implications:

• Accurate pre-operative imaging aids in planning complex cardiac surgeries.
• Improved understanding of sub-mitral aneurysm anatomy can refine surgical techniques.
• This case contributes to the literature on rare cardiac pathologies and their management.