PSEUDOANEURYSMS – Pseudoaneurysms are contained arterial disruptions. The main types are traumatic and post-surgical. Traumatic pseudoaneurysms are usually iatrogenic and are a result of arterial puncture for various procedures. Because the femoral artery is the most common site for such procedures, iatrogenic pseudoaneurysms are predominantly found in this area. Post-surgical pseudoaneurysms are due to contained suture line disruptions between the arterial wall and graft material. The diagnosis can be made rapidly by duplex ultrasonography. Traumatic pseudoaneurysms greater than 2.5cm are treated by injection of thrombin, a procoagulant, in the cavity of the pseudoaneurysm under sonographic guidance. Those that do not respond to this approach will need open surgery to repair the localized disruption in the vessel wall. Asymptomatic, traumatic pseudoaneurysms less than 2.5cm do not require treatment. Post-surgical pseudoaneurysms most often require revision of the surgical site suture line.