Anomalous origin of the left coronary arterial tree through three stems--one from the pulmonary trunk

Area of Science:

• Cardiology
• Congenital Heart Disease
• Coronary Artery Anomalies

Background:

• Congenital coronary artery anomalies are rare but can lead to significant cardiovascular events.
• Anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA) is a critical condition, typically presenting in infancy.
• This case presents a unique variation with the left anterior descending artery arising from the pulmonary trunk in an asymptomatic adult.

Observation:

• An 18-year-old male athlete presented with an asymptomatic, rare coronary artery anomaly.
• The left anterior descending coronary artery originated from the pulmonary trunk.
• The remaining left coronary arterial tree originated from the aorta, with collateral filling observed from the right and left circumflex coronary arteries.

Findings:

• No evidence of left-to-right shunting into the pulmonary trunk was detected.
• The anomalous coronary artery provided retrograde filling, suggesting a compensatory mechanism.
• The patient's asymptomatic status at 18 years old is unusual for such a coronary anomaly.

Implications:

• This case provides a rare opportunity to observe the natural history of a coronary artery anomaly in an adult.
• Understanding the long-term implications and potential complications of this specific anomaly is crucial.
• Conservative management allows for valuable insights into the hemodynamic adaptations and clinical course of this condition.