Pericardial Cyst at an Unusual Location: The Role of CT Imaging.

The pericardial cyst is a benign, uncommon congenital cystic lesion of pericardial origin located in the anterior and middle mediastinum. Most commonly, pericardial cysts are located in the right anterior cardiophrenic angle. Computed tomography (CT) and magnetic resonance imaging (MRI) of the chest are the non-invasive imaging modalities for the diagnosis of the pericardial cyst.