Sam, Marler explained, was a 14-year-old from Portland, Ore . He'd been born with a venous malformation _ a bulging mass of blood vessels and tissue _ on the left side of his face.
22.
Vascular anomalies are divided into vascular tumors / neoplasms which include infantile hemangiomas, and vascular malformations which include entities with enlarged or abnormal vessels such as capillary malformations ( port wine stains ), venous malformations, and lymphatic malformations.
