Holoprosencephaly-craniosynostosis syndrome

Definition

A rare syndromic craniosynostosis characterized by primary craniosynostosis (usually involving the coronal and metopic sutures) with holoprosencephaly (ranging from alobar to, most commonly, semilobar) and various skeletal anomalies (typically, hand and feet anomalies including fifth digit clinodactyly, hypoplastic phalanges and cone-shaped epiphyses, small vertebral bodies, scoliosis, coxa valga and/or flexion deformities of hips). Additional clinical features may include craniofacial asymmetry, microcephaly, brachy/plagiocephaly, short stature and psychomotor delay. There have been no further descriptions in the literature since 1993.