Pearls & Oy-sters: Mitral Annular Calcification as a Cause of Ischemic Stroke: A Case Report

Area of Science:

• Neurology
• Cardiology
• Pathology

Background:

• Determining stroke etiology is crucial for effective secondary prevention.
• Advances in diagnostics still present challenges in identifying uncommon stroke causes.
• Mitral annular calcification is an under-recognized etiology of embolic stroke.

Observation:

• This case highlights the utility of histopathologic clot analysis post-thrombectomy.
• The evaluation identified mitral annular calcification as the stroke's origin.
• Such findings are vital for understanding embolic stroke mechanisms.

Findings:

• Histopathology of thrombectomy-retrieved clots can uncover rare embolic sources.
• Identifying mitral annular calcification through clot analysis changes stroke management.
• This method offers a diagnostic pathway for cryptogenic stroke.

Implications:

• Histopathologic clot examination should be considered for cryptogenic embolic strokes.
• Accurate etiology determination, even for rare causes, optimizes secondary stroke prevention.
• This case underscores the importance of integrated diagnostic approaches in stroke care.