Child homicide caused by commotio cordis.

Cardiac concussion, previously known as commotio cordis, occurs in structurally normal hearts without gross or microscopic injury to the myocardium, cardiac valves, or coronary arteries, as opposed to other sports-related deaths known to occur more frequently in structural or congenital heart disease. We describe the sudden cardiac death of a 2-year-old child, who died as a result of a blunt force impact to the chest. A thorough medicolegal investigation was necessary to determine that the child died as a result of foul play.