The anatomy of the pericardial space: a study in cadavers and patients.

Within the pericardial cavity around the great vessels and the heart are several recesses and sinuses [1 , 2]. Knowledge of the anatomic details of these recesses is helpful in the interpretation of CT scans because peticardial effusions or cysts within them can simulate mediastinal or intracardiac lesions [3, 4, 5]. We studied the gross anatomy of the pericardial space on transverse and sagittal sections of cadavers and analyzed the appearance of the space on CT scans of 16 patients with pericardiaJ effusion.