Simpson-Golabi-Behmel syndrome: an X-linked encephalo-tropho-schisis syndrome.

We report on another family with the so-called "gigantism-dysplasia syndrome", an X-linked condition characterized by pre- and postnatal overgrowth, characteristic face with apparent coarseness, dysplastic changes in several tissues, and mild intellectual impairment. This condition has been called the Golabi-Rosen syndrome; however, we agree that is the same entity as that described, in a milder form, by Simpson et al in 1975 and by Behmel et al in 1984. Therefore, we suggest that this entity be designated the Simpson-Golabi-Behmel syndrome. The manifestations in affected individuals suggest that this condition represents an X-linked encephalo-tropho-schisis syndrome.