Anomalies of the vascular system as they affect the skin.
D000798:Angiomatosis; D006222:Hamartoma; D006391:Hemangioma; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008202:Lymphangioma; D008220:Lymphography; D009506:Nevus; D010690:Phlebography; D012878:Skin Neoplasms