Aortic pseudoaneurysm vs ductus diverticulum
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- updated 4 May 2022:
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Aortic pseudoaneurysm versusvs ductus diverticulum
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Differentiation of aortic pseudoaneurysm from ductus diverticulum is critical, particularly in the trauma setting. A traumatic aortic pseudoaneurysm is a surgical emergency whereas a ductus diverticulum is a normal anatomic variant.
The following are differentiating features:
Aortic pseudoaneurysm
- location: often seen along the inferior surface of the aortic isthmus 1
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forms an acute angle with the aortic wall
: acute angle - calcification
:not present - other supportive findings: signs of regional traumatic injuries such as an intimal flap or haematoma nearby within the aortic wall and/or mediastinum
Ductus diverticulum
- location: usually found at the anteromedial aspect of the aortic isthmus 2
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often forms a gentle, obtuse angle with the aortic wall
: often gentle, obtuse angle - calcification: an important differentiating point when present
- absence of other supportive findings
-<li>angle with the aortic wall: acute angle</li>-<li>calcification: not present</li>-<li>other supportive findings: signs of regional traumatic injuries such as an intimal flap or haematoma nearby within the aortic wall and/or mediastinum</li>- +<li>forms an acute angle with the aortic wall</li>
- +<li>calcification not present</li>
- +<li>other supportive findings: signs of regional traumatic injuries such as an intimal flap or haematoma nearby <a title="Aortic intramural haematoma" href="/articles/aortic-intramural-haematoma">within the aortic wall</a> and/or mediastinum</li>
-<li>angle with the aortic wall: often gentle, obtuse angle </li>- +<li>often forms a gentle, obtuse angle with the aortic wall</li>
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