[Lambl's excrescence and cerebral ischemic insult]

Area of Science:

• Cardiology
• Neurology
• Vascular Medicine

Background:

• Lambl's excrescences are mobile masses on cardiac valves.
• Their association with embolic stroke is recognized but not fully understood.
• Cryptogenic stroke requires careful etiological investigation.

Observation:

• A 47-year-old previously healthy woman presented with acute embolic stroke.
• Transesophageal echocardiography identified a filiform, hypermobile mass on the aortic valve, consistent with Lambl's excrescence.
• The stroke affected the left middle cerebral artery distribution.

Findings:

• The identified Lambl's excrescence is a potential source of emboli causing stroke.
• Platelet inhibition is the current standard treatment for cryptogenic stroke associated with valvular strands.
• The exact mechanisms linking Lambl's excrescences to stroke pathogenesis require further elucidation.

Implications:

• This case highlights the importance of echocardiography in diagnosing stroke of unknown origin.
• It reinforces the current therapeutic approach for stroke linked to Lambl's excrescences.
• Further research into the pathophysiology of Lambl's excrescences and stroke is warranted.