Pathology of Vascular Anomalies

Abstract

Vascular anomalies are classified as either a vascular tumor or a vascular malformation. Precise diagnosis of vascular anomalies requires careful correlation of clinical findings, diagnostic imaging, histopathology, and genetic analysis. Pathological diagnosis, in particular, is important especially for vascular tumors and malformations, following the International Society for the Study of Vascular Anomalies (ISSVA) classification. Herein, we present an overview of the updated classification scheme, and histological features emphasizing on vascular tumors (infantile hemangioma, congenital hemangioma and kaposiform hemangioendothelioma) and malformations.