LCx arising from right coronary sinus

Left circumflex (LCx) arising from right coronary sinus (RCA) is a coronary arterial variant.

Epidemiology

It is considered the most common coronary anomaly with prevalence range of around 0.37-1.3 % of all patients.

Sub types

According to some publications, anomalous LCx is divided into 3 types

  • type I: separate ostia for right coronary artery (RCA) and LCx
  • type II: common ostia in the right sinus.
  • type III: LCx arising as a branch of the proximal RCA.

Course

It commonly arises from a separate ostium within the right sinus, or as a proximal branch of the RCA. - i.e. left circumflex arising from right coronary artery

Significance

Although this anomaly is usually classified as benign and asymptomatic. There are occasional reports of sudden death, myocardial infarction, and angina pectoris in the absence of atherosclerotic lesions .

See also

Siehe auch: