A cirsoid aneurysm, also referred to as an arteriovenous hemangioma[1] is the dilation of a group of blood vessels due to congenital malformations with arterio venous (AV) shunting. "Cirsoid" means resembling a varix. They are most common on the head or neck.[2]

Cirsoid aneurysms appear as nodules or papules. Histologically, they are composed of both thick- and thin-walled blood vessels.[2]

References

  1. ↑ McKee's Pathology of the Skin (5 ed.). Elsevier. 2020. pp. 1698–1894.
  2. 1 2 Dermatopathology (2 ed.). Saunders. 2016. pp. 513–594.


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