Table 1. International Society for the Study of Vascular Anomalies classification of vascular anomalies.

Vascular tumors

Vascular malformations

Infantile hemangioma Congenital hemangioma  Rapidly involuting congenital hemangioma  Noninvoluting congenital hemangioma Tufted angioma (± Kasabach-Merritt phenomenon (KMP) Kaposiform Hemangioendothelioma (± KMP) Spindle cell hemangioendothelioma Epithelioid hemangioendothelioma Other rare hemangioendotheliomas, i.e., composite, retiform, and others Dermatologic acquired, i.e., lobular capillary hemangioma (pyogenic granuloma) Angiosarcoma

Slow-flow:  Capillary malformation  Venous malformation  Lymphatic malformation Fast-flow:  Arterial malformation  Arteriovenous malformation Combined vascular malformation (a mix of any of the above)