title: Abnormal radial artery in Down's syndrome.
abstract: Abnormal arterial patterns in the forearm were discovered in 12 of 77 patients (16%) with Down's syndrome. Eight patients had an enlarged anterior interosseous artery, the distal portion of which was palpable over the dorsum of the hand; in seven it was associated with absence of the radial artery and in one it coexisted with the radial and ulnar arteries. Three patients had a hypoplastic radial artery and a relatively dominant ulnar artery. One patient had a vestigial radial artery that ended as muscular branches in the forearm. The developmental aspects of these aberrations are discussed.
mesh_terms: D000293:Adolescent; D000792:Angiography; D001158:Arteries / Q000002:abnormalities*; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000150:complications* / Q000000981:diagnostic imaging; D005260:Female; D005542:Forearm / Q000098:blood supply* / Q000000981:diagnostic imaging; D006330:Heart Defects, Congenital / Q000150:complications; D006801:Humans; D007223:Infant; D008297:Male