title: An Extremely Rare Coronary Variation: Direct Communication between the Circumflex and Right Coronary Arteries.
abstract: Coronary collateral circulation frequently develops in the presence of obstructive coronary lesions as an alternative source of blood supply. We present a case of rare direct communication between the circumflex and right coronary arteries in a 30-year-old male with continuity between the distal segments of the circumflex and right coronary artery and no coronary artery stenoses. Direct intercoronary connections may be seen in the absence of an occlusive coronary lesion, as a remnant of the fetal circulation in adult life. We present this case to increase awareness of this rare coronary variation and its clinical implications.
authors.affiliation: Institute of Anatomy, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
authors.forename: Ivan
authors.initials: I
authors.lastname: Stankovic
authors.affiliation: Institute of Anatomy, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
authors.forename: Milica
authors.initials: M
authors.lastname: Jesic
authors.affiliation: Institute of Anatomy, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
authors.forename: Valentina
authors.initials: V
authors.lastname: Nikolic
keywords: coronary artery variation; intercoronary communication; open-ended circulation