Step I Abdominal aortic aneurysm - CT scan flap?

Started by Lothric
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Lothric

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Hey,

So a CT of an AAA can show an outer dilated calcified aortic wall (calcification of thrombus more specifically) with crescent-shaped non-opacification of aorta due to "flap/clot". What is meant by "flap" in this case?

I don't understand how the clot is involved in the translucency either - we just stated that it's calcificed and thus should be opaque, how can it then cause the non-opacification?