Introduction Arrhythmogenic right ventricular dysplasia (ARVD) is a heart muscle disorder that is characterized pathologically by fibrofatty replacement of the right (and sometimes left) ventricular myocardium. In 30-90% of cases, it is an inherited condition, with an autosomal dominant form of transmission. Disease expression is variable. In this article, we discuss a rare case of fetal ARVD and its difficult prenatal diagnosis, only confirmed at post-natal autopsy. […]