A large intrapericardial cyst presenting as a cardiac abnormality

Area of Science:

• Cardiology
• Cardiac Surgery
• Medical Imaging

Background:

• Mitral regurgitation can have various etiologies, including structural abnormalities and external compression.
• Intrapericardial cysts are rare and can present with diverse clinical manifestations.
• Distinguishing extrinsic causes of cardiac dysfunction from intrinsic disease is crucial for appropriate management.

Purpose of the Study:

• To report a unique case of mitral regurgitation caused by an intrapericardial cyst.
• To highlight the diagnostic challenges and successful treatment of this rare condition.
• To emphasize the importance of considering extrinsic compression in cases of unexplained mitral regurgitation.

Main Methods:

• Case report detailing clinical presentation, diagnostic imaging (radiography, angiogram), and surgical intervention.
• Review of relevant literature on intrapericardial cysts and their cardiac effects.
• Pre- and post-operative assessment of mitral regurgitation and cardiac anatomy.

Main Results:

• A large intrapericardial cyst was identified as the cause of mitral regurgitation.
• Radiographic findings initially mimicked an enlarged left atrium.
• Angiography revealed characteristic displacement of cardiac structures (right pulmonary artery elevation, left atrium depression).
• Successful surgical drainage of the cyst led to complete resolution of mitral regurgitation.

Conclusions:

• Extrinsic compression by an intrapericardial cyst can lead to significant mitral regurgitation.
• Prompt diagnosis and surgical intervention are effective in managing this rare condition.
• This case underscores the importance of comprehensive diagnostic evaluation for cardiac abnormalities.