Warts Warts are non-cancerous skin growths caused by the papillomavirus. Warts are more common in children than adults, although they can develop at any age.
White Matter Injury White matter injury (WMI), one of the most common consequences of premature birth, can produce long-term neurodevelopmental deficits. Learn more about this condition.
Wilms Tumor and Kidney Tumors Wilms tumor, also called nephroblastoma, is a malignant (cancerous) tumor originating in the cells of the kidney. It is the most common type of renal (kidney) cancer in children and accounts for about 5% of all childhood cancers.