IMAGES IN CARDIOLOGY
The Coronary CollierA New Coronary Artery Anomaly
Paul J. Galiwango, MD*,
Angeline Law, MD ,
Nisha D'Mello, MD* and
Benjamin J.W. Chow, MD*,
* University of Ottawa Heart Institute, Department of Medicine (Cardiology), Ottawa Hospital, Ottawa, Ontario, Canada
Department of Medicine (Cardiology), Ottawa Hospital, Ottawa, Ontario, Canada
Department of Radiology, Ottawa Hospital, Ottawa, Ontario, Canada
Manuscript received December 12, 2008;
accepted February 13, 2009.
Congenital coronary anomalies affect  1% of the population. The single coronary artery variant has been well described (1). We describe a new anomalous coronary artery variant in which a single coronary artery originating from the right coronary cusp courses the entire atrioventricular groove, encircling the heart like a necklace, or collier [French]. Computed tomographic coronary angiography was performed in a 59-year-old woman with atypical chest pain. Three-dimensional volume-rendered images show that a single right coronary artery, after giving rise to the posterior descending artery (yellow arrows), continues to course in the left atrioventricular groove, giving rise to obtuse marginal branches (black arrows) and to the left anterior descending artery (white arrows) (A and B, Online Video 1).
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Footnotes
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Dr. Chow has received research support from GE Healthcare and Pfizer, fellowship support from GE Healthcare, and educational support from TeraRecon.
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References
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1. Dodd J, Ferenick M, Liberthson R, et al. Congenital anomalies of coronary artery origin in adults: 64 MDCT appearance AJR Am J Roentgenol 2007;188:W138-W146.[Abstract/Free Full Text]
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