Aortic pseudoaneurysms typically occur as a result of trauma +/- intervention, a considered subset of traumatic aortic injury in the majority of cases. They can be acute or chronic.
Aortic pseudoaneurysms are contained ruptures of the aorta in which the majority of the aortic wall has been breached, and luminal blood is held in only by a thin rim of the remaining wall or adventitia.
They typically occur from focal aortic transection of which 85% are the result of penetrating trauma (gunshot or stab wounds) and 15% of cases from blunt trauma (motor vehicle accidents or falls). They also occur from non-traumatic pathologies such as penetrating atherosclerotic ulcers 5.
If at the level of the aortic arch, consider:
For differentiating features, see aortic pseudoaneursym versus ductus diverticulum.
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- 3. Creasy JD, Chiles C, Routh WD et-al. Overview of traumatic injury of the thoracic aorta. Radiographics. 1997;17 (1): 27-45. doi:10.1148/radiographics.17.1.9017797 - Pubmed citation
- 4. Takach TJ, Cervera RD, Gregoric ID. Aortic pseudoaneurysm. Tex Heart Inst J. 2005;32 (2): 235-7. Free text at pubmed - Pubmed citation
- 5. Lee S, Cho SH. Huge ascending aortic pseudoaneurysm caused by a penetrating atherosclerotic ulcer. Circ Cardiovasc Imaging. 2008;1 (3): e19-20. doi:10.1161/CIRCIMAGING.108.788133 - Pubmed citation
- 6. Warshauer DM, Archer RK, Selzman CH et-al. Case 115: aortic pseudoaneurysm from penetrating superior vena cava stent. Radiology. 2007;243 (3): 901-4. doi:10.1148/radiol.2433040944 - Pubmed citation
Related Radiopaedia articles
- acute aortic syndrome
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- endovascular aneurysm repair (EVAR)
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- aortic pseudocoarctation
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