Macroglossia in the Beckwith-Wiedemann syndrome.

An infant with the Beckwith-Wiedemann syndrome is described, with emphasis placed on the occurrence of macroglossia and possible maxillofacial deformities. In addition to placing the syndrome among the clinical entities which result in macroglossia, attention is also brought to concurrent metabolic disorder through hypoglycemia and possible late-occurring visceral malignancy which may produce significant patient compromise.