Abstract
On the basis of 3 personal cases and 119 additional cases collected from the literature the difference between dextroversion and mirror-image dextrocardia is outlined. It is concluded that dextroversion is a part of an exceedingly primitive arrest in development that frequently includes other thoracic and abdominal organs as well as intracardiac structures. The defect is altogether different in embryogenesis and anatomic findings from mirror-image dextrocardia.