Trigonocephaly-broad thumbs syndrome

Definition

A rare syndromic craniosynostosis characterized by neonatal trigonocephaly with prominent metopic ridge/bregma, hypotelorism, shallow orbits, deviation of the digits, broad thumbs with duplication of the terminal phalanx and clinodactyly. Craniofacial dysmorphism may also include oxycephaly, facial asymmetry, epicanthic folds, ptosis, hooked nose with extended septum (the philtrum may be attached anteriorly on the septum), and a large mouth with a downturned upper lip. Nail and dermatoglyphic abnormalities have also been reported. There have been no further descriptions in the literature since 1976.