Arteriovenous Fistula - An arteriovenous fistula is an abnormal connection or passageway between an artery and a vein.
https://en.wikipedia.org/wiki/Arteriovenous_fistula
Arteriovenous fistula - MayoClinic.com - A comprehensive overview covers the causes and treatment of this blood vessel condition.
https://www.mayoclinic.org/diseases-conditions/arteriovenous-fistula/symptoms-causes/syc-20369567
