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- (OH-ver-grohth SIN-drome) A group of genetic disorders in which there is an abnormal increase in the size of the body or a body part that is often noted at birth. Examples of overgrowth syndromes include neurofibromatosis, Sotos syndrome, Beckwith-Wiedemann syndrome, Simpson-Golabi-Behmel syndrome, Weaver syndrome, Proteus syndrome, Sturge-Weber syndrome, and fragile X syndrome. Many of these syndromes increase the risk of cancer.
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- basal cell nevus syndrome, Beckwith-Wiedemann syndrome, Cockayne syndrome, Down syndrome, Gorlin syndrome, Klinefelter syndrome, Klinefelter\'s syndrome, nevoid basal cell carcinoma syndrome, WAGR syndrome, Wilms tumor-aniridia-genitourinary anomalies-mental retardation syndrome