Etiology (modern autopsy series, 11–39y)
What causes SCD in young athletes?
Approx. distribution:
Autopsy-negative SUD: ~19%
HCM: ~13%
Coronary anomalies: ~11%
ACM: ~10%
CAD: ~8%
Myocarditis-related: ~6%
Aortic dissection: ~4%
WPW: ~3%
Note: ≥25y → CAD dominates.