Variant origin and course of left circumflex coronary artery.
Variant origin of left circumflex coronary artery (LCx) from right aortic sinus is a well-recognized coronary variation, usually without any clinical consequences. However, the variant origin and trajectory of the artery may have major implications during percutaneous coronary intervention, coronary artery surgery, aortic and mitral valve replacement procedures. We observed a variant LCx in a heart specimen belonging to 45-year-female with no history of hypertension, diabetes mellitus and coronary artery disease. The artery arose along with the right coronary artery from a common ostium in right aortic sinus and depicted a retroaortic course. The vessel was located at the level of aortic annulus and 6.6 mm above mitral valve annulus. The degree of luminal stenosis in variant LCx was higher than that in right coronary artery (RCA) and left anterior descending artery (LAD). Appropriate anatomical knowledge of the location and course of variant LCx is important for successful coronary interventions and valve replacement procedures.
['Randhawa|Arpandeep|A|', 'Saini|Abhimanyu|A|', 'Aggarwal|Anjali|A|', 'Gupta|Tulika|T|', 'Saikia|Uma Nahar|UN|', 'Rohit|Manoj Kumar|MK|', 'Sahni|Daisy|D|']
D063405:Anatomic Variation D002102:Cadaver D003330:Coronary Vessel Anomalies D003331:Coronary Vessels D005260:Female D006801:Humans D008875:Middle Aged D008943:Mitral Valve D012850:Sinus of Valsalva
Percutaneous coronary intervention Atherosclerosis Prosthetic valve replacement Variant left circumflex coronary artery