Incidentally Detected Pericardial Cyst Adjacent to the Right Atrium

Pericardial cysts are rare benign congenital lesions. Most pericardial  cysts are asymptomatic and they can stay silent even reach massive  sizes. They are classically located in the anterior mediastinum at the  cardiophrenic angle, but occasionally they can be found atypic location. They are uncommon, with an estimated prevalence of 1 in 100,000 population and have an incidence of 7% among mediastinal masses. Approximately 1 in 6 patients are symptomatic with complaints of chest pain. Pericardial cysts may cause cardiac compression when they enlarge over time. They are easily seen on routine chest radiography. Diagnosis is confirmed  with computed tomography, echocardiography or magnetic resonance imaging, and surgical treatment should be indicated for all of the patients as soon as possible