the classical explanation for the clinical picture of heart attack and its main symptom , angina pectoris , as a clinical expression of the morphological illness of coronary sclerosis has proved to be erroneous : there are severe cases of coronary sclerosis with occlusion but no clinical symptom of heart attack , and there are severe coronary infarctions with no arteriosclerotic coronary occlusion .
C0027051
heart attack
C0021308
infarctions