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Start free with EleplanAnomalous aortic origin of the left coronary artery
ORPHA:541443Morphological anomaly
Also called AOLCA · L-ACAOS · Left coronary artery from right aortic sinus
What it is
A rare coronary artery congenital malformation characterized by an anomalous origin and course of the left coronary artery, which originates from the right aortic sinus of Valsalva and has an abnormal proximal course, which may be intramural, prepulmonic, subpulmonic, retroaortic, retrocardiac or wrapped around the apex. Patients are frequently asymptomatic, although chest pain, dyspnea, palpitations, dizziness, syncope, and sudden cardiac arrest/death (typically following intense physical exertion) may be observed. This malformation is associated with a high risk of sudden cardiac death so surgical revascularization is recommended even in cases with no associated evidence of myocardial ischemia.
Key facts
- Inheritance
- Not applicable
- Classified as
- Morphological anomaly
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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