title: Coronary artery ostial atresia: diagnosis of conotruncal anastomotic collateral rings using CT angiography.
abstract: In this paper we discuss 2 unprecedented examples of coronary ostial atresia in adults. The first case documents a case of left main ostial agenesis with intercoronary communication through a retroaortic Kugel anastomotic collateral. The second case describes a right coronary artery (RCA) ostial agenesis with a preconal intercoronary anastomosis in association with supravalvular pulmonary stenosis. While atresia of the left coronary artery ostium is a rare anatomic variant of the coronary circulation, atresia of the right coronary ostium is exceedingly rare and not reported in adults (1). Correlative images of coronary computed tomography angiography (CTA) using a 64-slice multidetector computed tomography and coronary catheterization angiograms are presented for both cases, and the arterial collateral pathways between the proximal right and left coronary systems are discussed. We also reviewed the differences between congenital and developmental forms of abnormalities.
authors.affiliation: Department of Radiology, University of Southern California, Los Angeles, CA, USA.
authors.forename: Farhood
authors.initials: F
authors.lastname: Saremi
authors.forename: Graydon
authors.initials: G
authors.lastname: Goodman
authors.forename: Alison
authors.initials: A
authors.lastname: Wilcox
authors.forename: Raffi
authors.initials: R
authors.lastname: Salibian
authors.forename: Gabriel
authors.initials: G
authors.lastname: Vorobiof
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003326:Coronary Circulation; D003330:Coronary Vessel Anomalies / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011666:Pulmonary Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D014057:Tomography, X-Ray Computed