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ALCAPA (Anomalous Left Coronary Artery from the Pulmonary Artery)

Imaging findings

Two adult cases presented: one with a large left coronary artery and fistula resulting in steel phenomenon, and one with an atretic left coronary artery where the heart was supplied entirely by the right coronary system.

Key takeaways

ALCAPA can present in adulthood. The degree of fistula and steel phenomenon determines the clinical presentation and timing of symptoms.

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