Article

Type IV dual left anterior descending artery associated with anomalous origin of the left circumflex coronary artery from the right coronary artery: a case report.

Department of Cardiology, Gazi University School of Medicine, Besevler, Ankara, Turkey.
The Journal of invasive cardiology (Impact Factor: 1.57). 01/2009; 20(12):669-70.
Source: PubMed

ABSTRACT Dual left anterior descending coronary artery (LAD) originating from the left main stem and the right coronary artery (RCA) (Type IV dual LAD) is a very rare coronary artery anomaly. Association of this anomaly with the anomalous origin of the circumflex artery from the RCA is a very rare occurrence. In this report, we describe a patient presenting with acute lateral wall myocardial infarction who subsequently was found to have this coronary anomaly.

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    ABSTRACT: Dual left anterior descending coronary artery (LAD) originating from the left main stem and the right coronary artery (type IV LAD) is a rare congenital anomaly. Its association with an anomalous origin of the left circumflex (LCx) from RCA is even rarer. We describe a patient presenting with acute inferior wall myocardial infarction, who was subsequently found to have this coronary anomaly. He underwent staged PCI of the dominant RCA and anomalous LCx successfully through the radial route. We conclude that anomalous coronaries can be safely and successfully treated through the radial route after careful evaluation of origin and course of the anomalous vessels. CT coronary angiography is extremely useful in delineating the vessel course and particularly their relation to great arteries.
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    ABSTRACT: The case of an asymptomatic patient with prolapsing left atrial myxoma, in whom preoperative coronary angiography revealed a rare coronary artery anatomy in the absence of atherosclerotic obstructive disease, is presented. There was a type IV dual left anterior descending (LAD) artery with intraseptal course of the right aortic sinus-connected (long) LAD artery and an ectopic left circumflex artery originating from the right aortic sinus and having a retroaortic course. The patient underwent successful surgical excision of the mass which was confirmed by histology to be cardiac myxoma. This particular coronary artery anatomy has only been described once, and this is the first reported case of its combination with cardiac myxoma. This report highlights the importance of differentiating between the possible courses of such ectopic coronary arteries. The angiographic signs which enabled differentiation of the intraseptal course of the long LAD artery from the malignant interarterial course with which it is frequently confused are presented.
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Oct 2, 2014