Coronary arteritis and thrombosis caused by COVID-19-induced Multisystem Inflammatory Syndrome in an infant: first autopsy case report.

Data suggests that COVID-19 is less frequent in children, with a milder course. However, multisystem inflammatory syndrome in children has been reported to occur after COVID-19 and can cause severe cardiac manifestations, including coronary dilation and aneurysms. We report on the first histologically proven arteritis with coronary dilatation and thrombosis following Multisystem Inflammatory Syndrome induced by COVID-19 in a 21-month-old male infant.