We report a case of one young patient with symptoms of palpitations and ventricular and supraventricular arrhythmias documented in the 24-hours Holter record. He had a deformity of silhouette and pericardial calcification in the chest roentgenogram. In the computed tomography and the magnetic resonance employed in the evaluation of structural anomalies, dates compatible with ventricular herniation, across one parcel of pathologically calcified pericardium, were present. The probable etiology, operatory findings and the management of those patients are discussed.