<prompt> Cirsoid aneurysms most commonly occur in which of the following vesselsAoic archSplenic aerySaphenous veinSuperficial temporal aery  <response>: Cirsoid aneurysms are rare aerio-venous fistulas of the scalp. They are usually congenital in aetiology. In 90 of the patients, the superficial temporal aery is the main supply to the fistula ref - pubmed.com 