Discussion

Pericardial or mesothelial cysts are the most frequent benign “tumors” of the pericardium. Pericardial cyst is the result of an outpouching of the parietal pericardium that is lined by mesothelial cells. Most of the pericardial cysts are uniloculus. They usually contain clear yellow fluid and do not communicate with the pericardial space.

Pericardial cysts occur most frequently in the third or fourth decade of life, equally among men and women.

Generally, pericardial cysts are detected incidentally in asymptomatic patients, as in our case. However, 25–30% of patients will have chest pain, dyspnea, cough, or paroxysmal tachycardia. Only very rarely this is a cause of serious cardiovascular complications, such as acute right-sided heart failure due to hemorrhage into a pericardial cyst [1].

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