False (traumatic) aneurysm of the facial artery caused by a foreign body

False (traumatic) aneurysms of the facial regions are relatively rare. The facial artery is most often involved. A case of false aneurysm caused by penetration of the facial artery by a small, sharp object is reported. The object was lodged in the wall of the aneurysm. Metallurgical investigation identified the foreign body as a fragment of a metal hammer. This finding may be important from a forensic point of view.