Vascular lesions are abnormalities of the blood vessels, including arteries, veins, or capillaries, that can be either congenital or acquired. They present in various forms, such as hemangiomas, port-wine stains, spider angiomas, and telangiectasias. These lesions may appear on the skin or within internal organs and are typically classified as either vascular tumors, which involve abnormal growth of blood vessels, or vascular malformations, which arise from structural abnormalities in vessel formation. While some vascular lesions are benign and resolve over time, others may require medical intervention due to their size, location, or impact on function.