Anomalous origin of the left main coronary artery from the right anterior aortic sinus: angiographic definition of anomalous course

Am J Cardiol. 1985 Mar 1;55(6):770-6. doi: 10.1016/0002-9149(85)90154-7.


Five cases of anomalous origin of the left main (LM) coronary artery from the right anterior aortic sinus are presented. In 4 patients the anomalous artery ran a septal course through the floor of the right ventricular infundibulum and in 1 an interarterial course between the aorta and pulmonary trunk. The cineangiographic features of these courses are contrasted with arteries running anterior free wall and retro-aortic courses. A caudal anterior loop of the anomalous LM coronary artery indicates a septal course, a cranial posterior loop an interarterial course, a cranial anterior loop an anterior free wall course and a caudal posterior loop a retro-aortic course. Review of previously documented cases shows that the septal course is relatively common, although previously not recognized.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Aged
  • Aortography
  • Child
  • Cineangiography
  • Coronary Angiography*
  • Coronary Vessel Anomalies / diagnostic imaging*
  • Coronary Vessel Anomalies / pathology
  • Coronary Vessels / pathology
  • Female
  • Heart Ventricles / diagnostic imaging
  • Humans
  • Male
  • Middle Aged
  • Sinus of Valsalva / abnormalities*
  • Sinus of Valsalva / diagnostic imaging
  • Sinus of Valsalva / pathology