Carpenter syndrome (acrocephalopolysyndactyly, Type II) is a congenital condition that was first described in 1901 by George Carpenter, a British pediatrician. Although Carpenter syndrome presents with marked phenotypical variability, defining characteristics of this disorder include acrocephaly (peaked head), craniosynostosis (premature closure of the cranial sutures), craniofacial asymmetry, soft tissue syndactyly (webbing of the fingers and toes), and preaxial polydactyly, primarily of the toes.