The vascular lesions of childhood.

A wide array of vascular lesions occurs in the pediatric population. The lesions vary in nature from normal physiologic phenomena to large vascular malformations with serious and sometimes life-threatening complications. Vascular lesions occur in 20 to 40 per cent of newborn infants and therefore comprise the single largest group of neoplasms in infancy and childhood. Specific entities are discussed in two major sections--hemangiomas and vascular stains.