Keywords: atherosclerosis, coronary artery disease (PubMed Search)
Approximately 7-10% of cases of ACS are not related to atherosclerotic coronary disease. Some other causes of ACS include the following:
emboli (e.g. bacterial)
thoracic aortic dissection
These conditions can produce ST-segment changes that resemble those of true STEMI or non-STEMI, and therefore some of these patients are diagnosed retrospectively after a negative catheterization.