Arteriovenous Hemangioma (Malformation)
Steven D. Billings, MD
Key Facts
Terminology
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Acral arteriovenous tumor
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Cirsoid aneurysm
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Benign vascular tumor composed of thick- and thin-walled blood vessels
Microscopic Pathology
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Circumscribed tumor in dermis
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Vessels closely aggregated together
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Ectatic thin- and thick-walled blood vessels
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Thicker blood vessels have muscular walls resembling arteries
Top Differential Diagnoses
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Deep arteriovenous malformation
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Capillary hemangioma
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Cavernous hemangioma
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Venous hemangioma
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Venous lake
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Angioleiomyoma
Arteriovenous hemangioma is composed of a circumscribed proliferation of thick-walled muscular vessels that resemble arteries  and thin-walled ectatic veins  . |
This higher power image of arteriovenous hemangioma demonstrates the ectatic thin-walled veins  and the thicker walled vessels resembling arteries  . The vessels have flattened endothelium. |
TERMINOLOGY
Synonyms
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Cirsoid aneurysm
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Cirsoid hemangioma
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Acral arteriovenous tumor
Definitions
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Benign vascular tumor composed of thick- and thin-walled blood vessels
CLINICAL ISSUES
Epidemiology
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Incidence
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Uncommon lesions
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Age
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