Vascular anomalies in pediatric patients: updated classification, imaging, and therapy.

Recent advances in knowledge regarding histopathology, cause, and treatment of pediatric vascular anomalies have led to substantial changes in classification and terminology. Over the past two decades, various subspecialists have adopted a new classification system proposed by the International Society for the Study of Vascular Anomalies (ISSVA). The ISSVA classification of vascular anomalies divides vascular anomalies into two categories: vascular neoplasms and malformations. It has been widely adopted by various pediatric subspecialists, because it reliably correlates patient presentation and disease progression, with more accurate histology, diagnosis, imaging, and treatment.