LV aneurysms are most commonly caused by myocardial infarction. What's the difference between true aneurysm and pseudoaneurysm?
True aneurysms
Definition: Areas of thinned myocardium which are dyskinetic and involve the full thickness of the wall
Location: More often seen in the anterior wall and apex
Neck: Wide neck
Risk of rupture: Low
Pseudoaneurysms
Definition: Formed by rupture of the ventricular free wall, contained by overlying adherent pericardium
Location: More often located in the posterior and lateral wall segments
Neck: Narrower than the diameter of the aneurysm
Risk of rupture: High
That's all!
PS: Images show cardiac MRI and echocardiogram of a patient with large true aneurysm involving the basal to mid inferoseptal, inferior, and inferolateral myocardium with concurrent mural thrombus.
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