Figure legends.
Figure 1. A. Selective coronary angiography of the right coronary artery showing no obstructive lesions, but revealing a remarkable radio-opaque aspect of the calcified pericardium.
B. Simultaneous right and left ventricular pressure tracings showing diastolic pressure equalization in both chambers and the ‘square root sign’ (encircled in red). Left ventricular rapid filling wave (LVRFW) is accentuated (blue arrow).
C. Pathological specimen of the surgically removed heavily calcified pericardium.