Report of a new anomaly of the left anterior descending artery: type VI dual LAD

Catheter Cardiovasc Interv. 2012 Oct 1;80(4):626-9. doi: 10.1002/ccd.23219. Epub 2011 Sep 26.

Abstract

A 48-year-old man with past medical history of coronary artery disease, previous angioplasty, hyperlipidemia, and generalized anxiety disorder presented with atypical chest pain. Coronary angiography and CT angiography revealed a variant dual left anterior descending (LAD) coronary artery not previously described. Spindola-Franco et al. have categorized dual LAD into four angiographic subtypes based on the origin and course of both a short- and a long branch of the LAD. Additionally, Manchanda et al. have described a novel variant of dual LAD with the short- and long LAD originating directly from the left and right coronary sinuses, respectively (Type V, see Table I). In the case presented, the long LAD arises from the right coronary artery and follows a unique route underneath the right ventricular outflow tract in the interventricular septal area to the anterior interventricular groove. We propose that this anatomy represents a new variant of dual LAD (Type VI).

Publication types

  • Case Reports

MeSH terms

  • Angina Pectoris / diagnostic imaging
  • Angina Pectoris / etiology
  • Coronary Angiography / methods*
  • Coronary Vessel Anomalies / classification
  • Coronary Vessel Anomalies / complications
  • Coronary Vessel Anomalies / diagnostic imaging*
  • Coronary Vessel Anomalies / therapy
  • Humans
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Tomography, X-Ray Computed*