A small number of infants and children with BWS develop cancer .
Most children have only a few of the many distinct characteristics of the syndrome.
Studies suggest that the period of highest risk for developing cancer is before the age of 4 years. Children with BWS who have hemihypertrophy may have an increased risk of developing cancer. Most children with BWS have the same needs as their brothers and sisters. Others have various special needs that change at different stages of growth and development. Newborns must have their blood glucose levels checked a few times after birth to make certain the levels are normal, and remain so, over the first few days.