Merck Manual

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Vascular Lesions of the Skin


Denise M. Aaron

, MD, Dartmouth-Hitchcock Medical Center

Last full review/revision Sep 2020
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Vascular lesions include acquired lesions (eg, pyogenic granuloma) and those that are present at birth or arise shortly after birth (vascular birthmarks).

Vascular birthmarks include vascular tumors (eg, infantile hemangioma) and vascular malformations.

Vascular malformations are congenital, life-long, localized defects in vascular morphogenesis and include capillary (eg, nevus flammeus), venous, arteriovenous (eg, cirsoid aneurysm), and lymphatic malformations.

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