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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.