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].