Situs Inversus Totalis and Single Coronary Ostium: A Coincidence or a Pattern?

Situs inversus totalis and single coronary ostium are rare congenital anomalies, and no ontogenic connection has been described between them. Only three cases of association of single coronary ostium and situs inversus have been reported in the literature, all found on angiography. Here we present the first case of this association discovered at autopsy. Based on the apparently higher than expected frequency of this finding, an underlying pathologic connection between these conditions is proposed.