Introduction
Pericardial cysts are uncommon benign tumors, which account for 7% of all mediastinal tumors with incidence of 1:100,000 [1-3]. Epicardial cysts are much rarer than pericardial cysts, and their surgical management has seldom been reported. The surgical indications are when the cyst becomes symptomatic, infected or possibly malignant, grows progressively and compresses adjacent important structures [2, 4].
Mostly these cysts are asymptomatic and found incidentally on chest radiographs. 70% are located at the right cardiophrenic angle, 22% are at the left, and the rest are in the anterior or posterior mediastinum [5]. It is usually composed of a single layer of flat or cuboidal mesothelium containing clear, yellowish fluid [1, 6].