title: Cirsoid aneurysm.
abstract: A cirsoid aneurysm, which is an abnormal arteriovenous connection, occurred in a 65-year-old man. The lesion can vary greatly in size and does not have a characteristic histologic picture. Small lesions require no treatment.
mesh_terms: D001164:Arteriovenous Fistula / Q000473:pathology*; D001808:Blood Vessels / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D014953:Wrist / Q000098:blood supply / Q000473:pathology*