How is a pseudoaneurysm different from a true aneurysm?
Pseudoaneurysms are also known as false aneurysms. Unlike true aneurysms they are not contained by vessel wall but by soft tissue such as fibrosis or haematoma. They are more prone to rupture and can result in massive haemorrhage.
How common are pseudoaneurysms after angiography?
Occur after 1% of diagnostic and 4% of interventional procedures.
Anterosuperior to the right common femoral artery. Ying-yang sign is demonstrated.
More superiorly is a smaller haematoma without internal flow. Normal flow demonstrated within the common femoral artery pre and post pseudoaneurysm.