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Background: Coronary artery anomalies
may be seen in 1-5% of coronary angiographies. Origin of the left
coronary artery from right aortic cusp is a very rare anomaly and its incidence
is about 0.15%. This
anomaly could be presented by myocardial ischemia and even sudden cardiac death
during exercise in young patients. For the diagnosis of coronary anomalies
different diagnostic modalities such as, echocardiography, angiography and CT angiography
can be helpful.
Cases: We
report 3 cases with this anomaly and two of them did
not have any lesion in their coronary arteries One of these patients had severe
coronary artery disease and underwent coronary artery bypass graft surgery.
Conclusion: Although abnormal origin of
left coronary artery from right aortic valsalva sinus is a rare anomaly, due to
causing ischemic cardiac symptoms and the possibility of sudden cardiac death it
is considered an important anomaly. For definite diagnosis of this anomaly
coronary angiography and/or CT
angiography is useful.
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