A pseudoaneurysm is a condition that is also known as a false aneurysm. A pseudoaneurysm happens when blood leaks through a rupture in the vessel wall but is contained by the adventitia or surrounding perivascular soft tissue. A direct transmission of blood flow exists between the vessel lumen and the aneurysm lumen through the hole in the vessel wall. The risk of rupture is higher with a pseudoaneurysm than with that of a true aneurysm of comparable size, due to poor support of the aneurysm wall. Pseudoaneurysms generally require treatment.

Pseudoaneurysm Symptoms

The symptoms of a pseudoaneurysm are usually a painful, tender, pulsatile mass, and the overlying skin is sometimes red. These pulsatile masses can sometimes be confused with abscesses. A person who is experiencing these symptoms may describe a history of catheterization or trauma, and they may note the gradual expansion of the pulsatile mass.

Getting Diagnosed

Our team of specialists provide thorough neurological evaluations using the latest diagnostic technology including CT angiography and 3-D angiography.

We work very closely with the departments of Neurosurgery, Interventional Neuroradiology, Neurology and Radiation Oncology, as well as the Neurocritical Care Center and Stroke Center to ensure an accurate diagnosis and the appropriate treatment for the best outcome.

Your Path to Health and Wellness Starts Here

The Brain Aneurysm Center and Cerebrovascular Surgery and Endovascular Neurosurgery Center of Northwell Health Neuroscience Institute combines advanced technical knowledge and cutting-edge procedures for diagnosing and treating arteriovenous malformations, ruptured and non-ruptured aneurysms, carotid artery dissection and related conditions.


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The Neuroscience Institute

We are dedicated to the world-class diagnosis and treatment of neurological diseases and disorders.