Ultrasound and magnetic resonance angiography features of post-traumatic ulnar artery pseudoaneurysm: a case report and review of the literature.

Ulnar artery pseudoaneurysms are very uncommon. The least common etiological mechanism is a single direct trauma. It is important to identify these lesions, which may have important clinical complications such as distal thrombosis with digital ischemia or gangrene. This report describes the features of sonography and magnetic resonance angiography of a histologically confirmed ulnar artery pseudoaneurysm.