What are the variants of anomalous origin of the coronary arteries from the main pulmonary artery (ALCAPA)?

Updated: Aug 10, 2020
  • Author: Mary C Mancini, MD, PhD, MMM; Chief Editor: Syamasundar Rao Patnana, MD  more...
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Answer

ALCAPA is usually an isolated cardiac anomaly but, in rare incidences, has been described with patent ductus arteriosus, ventricular septal defect, tetralogy of Fallot, and coarctation of the aorta. Extremely rare variations of anomalous origin of the coronary arteries from the main pulmonary artery include the following:

  • The left anterior descending or circumflex branches

  • The right coronary, often discovered as an incidental finding on autopsy

  • Both the right and left coronary arteries, a circumstance not compatible with survival


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