Feb 4, 2025 · False aneurysms, also known as pseudoaneurysms, are abnormal outpouchings or dilatation of arteries which are bounded only by the tunica adventitia, the outermost layer of the arterial wall. These are distinguished from true aneurysms, which are bounded by all three layers of the arterial wall.

Feb 14, 2025 · Unenhanced CT scans may demonstrate a low-attenuation rounded structure arising from the donor artery. Intermediate or high attenuation (hemorrhage) adjacent to the pseudoaneurysm may be seen and indicates rupture, which may vary in attenuation dependent on being chronic or acute.

Dec 27, 2024 · Pseudoaneurysms, also known as false aneurysms, are an important finding in medical imaging tests that need prompt diagnosis and treatment. They are prone to rupture and can be life threatening.

Nov 21, 2024 · Aneurysms are focal abnormal dilatation of a blood vessel. They typically occur in arteries; venous aneurysms are rare. Aneurysms may also occur in the heart. Atherosclerotic. Non-atherosclerotic. Morphologically there are two main types of aneurysms. The morphology is not specific for any cause:

Feb 17, 2024 · Pseudoaneurysms are false aneurysms occurring at the site of arterial injury from trauma or infection. Unlike true aneurysms in which the blood vessel wall balloons, a pseudoaneurysm does not involve the vascular wall.

Mar 16, 2023 · A pseudoaneurysm, also known as a “false aneurysm”, occurs when there is a breach to the arterial wall, resulting in an accumulation of blood between the tunica media and tunica adventitia of the artery.

In pseudo-aneurysm, thrombotic apposition may give the false impression of presence of a pericardial layer. Contrast ventriculography, radionuclide ventirculography, transthoracic and transesophageal echocardiography, cardiac CT and cardiac MRI have been proposed to distinguish the two entities.

MR is an increasingly useful tool in the 3D characterisation of LV aneurysms and may be able to distinguish true from false aneurysms as shown in this case. The MR findings provided accurate information to guide subsequent surgical intervention.

Nov 23, 2012 · CT, MRI, sonography, and angiography may all be valuable in the imaging workup of pseudoaneurysms. Prompt diagnosis and treatment of pseudoaneurysms are necessary to avoid the morbidity and mortality associated with hemorrhage and rupture.

Diagnosing false aneurysms typically involves imaging studies such as ultrasound, computed tomography (CT) scan, or magnetic resonance imaging (MRI). Treatment options for false aneurysms depend on their size, location, and the underlying cause.