Pericardial cysts as a problem in differential diagnosis

Pericardial cysts are usually located in the cardiophrenic corners, most frequently to the right, in the front lower mediastinum. Clinically, their course is usually asymptomatic. They are divided into connatal and acquired pericardial cysts. Preoperatively they are often unexpected, especially in the case of unusual locations. Our work deals with two cases of pericardial cysts. The first case treats a connatal pericardial cyst located supradiaphragmatically, which was described in the literature of 1929, in connection with 7 patients. The second case dealt with the acquired cystic formations of the pericardium due to the uncured specific pericarditis. This patient developed clinical appearance of the pericardial tamponade. Therefore, pericardial cysts, although statistically rare, cannot be neglected in the everyday pneumological and internal medical practice.