Walker‐Warburg syndrome: Report of three affected sibs

Abstract
Walker‐Warburg syndrome (WWS) is a lethal, autosomal recessive disorder characterized by Type II lissencephaly, retinal malformation, cerebellar malformation, and congenital muscular dystrophy. We report on 3 sibs with WWS born to a consanguineous couple. The fetal hydrocephalus associated with this syndrome, while not consistent or necessary for diagnosis, is the key manifestation for its prenatal detection. These sibs illustrate the importance of a careful search for associated malformation(s) in a fetus or newborn infant with hydrocephalus and the potential pitfalls of accurate genetic risk estimation in families of such propositi.

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