Acquired arteriovenous fistula of the right forearm caused by repeated blunt trauma: a report of a rare case.

In acquired arteriovenous fistula (AVF), there is usually a history of penetrating injury and hemorrhage. We report a very rare case of an elderly man with acquired AVF of the right upper extremity without any history of penetrating trauma and hemorrhage, but with a history of repeated blunt trauma on his right forearm. Although no surgery was performed for the AVF, it was concluded close follow up would be prudent.