Surgical and Radiologic Anatomy

, Volume 39, Issue 3, pp 333–336 | Cite as

Variant origin and course of left circumflex coronary artery

  • Arpandeep Randhawa
  • Abhimanyu Saini
  • Anjali Aggarwal
  • Tulika Gupta
  • Uma Nahar Saikia
  • Manoj Kumar Rohit
  • Daisy Sahni
Anatomic Variations


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.


Variant left circumflex coronary artery Atherosclerosis Percutaneous coronary intervention Prosthetic valve replacement 


Compliance with ethical standards


The study was supported by the grant from Indian Council of Medical Research, New Delhi, India. Grant Number—3/1/3/JRF-2010/HRD-77(11352).

Conflict of interest



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Copyright information

© Springer-Verlag France 2016

Authors and Affiliations

  • Arpandeep Randhawa
    • 1
  • Abhimanyu Saini
    • 2
  • Anjali Aggarwal
    • 1
    • 5
  • Tulika Gupta
    • 1
  • Uma Nahar Saikia
    • 3
  • Manoj Kumar Rohit
    • 4
  • Daisy Sahni
    • 1
  1. 1.Department of AnatomyPost Graduate Institute of Medical Education and ResearchChandigarhIndia
  2. 2.Department of Internal MedicineJohn H. Stroger Jr. Hospital of Cook CountyChicagoUSA
  3. 3.Department of HistopathologyPost Graduate Institute of Medical Education and ResearchChandigarhIndia
  4. 4.Department of CardiologyPost Graduate Institute of Medical Education and ResearchChandigarhIndia
  5. 5.ChandigarhIndia

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