title: The anomalous origin of the circumflex artery (ramus circumflexus) in the right aortic sinus: a case study.
abstract: The anomalous origin of the circumflex artery in the right aortic sinus was recognized in one out of 123 human hearts. Its independent ostium, located below the valve 2.5 mm behind the ostium of the right coronary artery, and 3.0 mm in front of the dorsal attachment of the sigmoid valve. It follows a retro-aortic course and its terminal distribution is exiguous, compensated by a coronary pattern of right predominance. There are no associated cardiac anomalies. Finally, this knowledge is shown to be important in coronary arteriographic interpretation, in addition to having anatomical-surgical relevance in valve replacement.
authors.affiliation: Departamento de Anatomía Humana, Facultad de Medicina, Universidad Autónoma de Barcelona, Spain.
authors.forename: J R
authors.initials: JR
authors.lastname: Sañudo-Tejero
authors.forename: A
authors.initials: A
authors.lastname: Rodríguez-Baeza
authors.forename: J M
authors.initials: JM
authors.lastname: Domenech-Mateu
mesh_terms: D003330:Coronary Vessel Anomalies / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D012850:Sinus of Valsalva / Q000002:abnormalities*