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Although plaque rupture is the major cause of acute myocardial infarction, vasospasm is also known as a potential cause of acute myocardial infarction. However, it is very rare and is sometimes difficult to diagnose correctly. A 30-year-old male patient with suspected unstable angina pectoris who received catheterization in 1999 had normal coronary artery but positive result in the provocation test...
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