Calcifications of the atherosclerotic plaque is the form of a complicated atherosclerotic lesion. It is characterized by granular or massive deposits of calcium chloride inside the atherosclerotic plaque. It was found in at least one of the three main coronary arteries in 43 (86.00%) out of 50 autopsy cases. In all three, coronary arteries calcifications were found in 8 (18.60%) cases, in two coronary arteries in 19 (44.19%), and one coronary artery in 16 (37.21%) cases. Calcifications of atherosclerotic changes which contain fats were statistically significantly more frequently established than those which did not contain fats. In three fourths of cases calcifications were present in segments with significant narrowing of the arterial lumen (group 3 and 4). In 59.61% of calcificated atherosclerotic changes the residual lumen was of eccentric shape, in 20.51% of concentric shape, in 7.69% it was semilunar, and in 12.18% a few lumens were detected (channeled and organized thrombi). Granular deposits of calcium were established 63.46%, while massive in 36.54% of segments of atherosclerotic lesions, but no statistically significant difference in distribution of these two types of calcifications was established in regard to the type of atherosclerotic change.