Nager acrofacial dysostosis and preaxial polydactyly: a further example with lethal outcome

A sporadic malformed premature stillborn showing the typical craniofacial features of mandibulofacial dysostosis combined with unilateral extra thumb and visceral anomalies is described and classified as a preaxial acrofacial dysostosis of the Nager type (NAFD). Comparison with other rare similar cases reported in the literature is made and genetic heterogeneity discussed.