What is Beckwith-Wiedemann syndrome?
Beckwith-Wiedemann syndrome is a genetic overgrowth syndrome that can affect multiple parts of the body. Infants with the condition are usually bigger than other infants (macrosomia) and tend to be taller than their classmates during childhood. Some children with Beckwith-Wiedemann syndrome will have specific parts of their body on one side of the body or the other that will grow abnormally large making them look uneven. This uneven growth (hemihyperplasia) usually becomes less obvious as the child gets older.