Thoracic aortic pseudoaneurysm
25 Y/O male with severe chest pain after blunt chest trauma due to car accident.
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There is a small well defined outpouching of the proximal descending aorta (just distal to the origin of the left subclavian artery), in keeping with pseudoaneurysm.
2 case question available
The findings of CT in a young patient with thoracic blunt trauma compatible with thoracic aortic pseudoaneurysm.
Trauma to the aorta may result in:
- aortic intramural haematoma : haematoma within the wall of the aorta.
- aortic pseudoaneurysm : aortic rupture contained by adventitia or periaortic tissue.
- aortic laceration: a tear (typically transverse) in the intima which may extend through the vessel wall.
- aortic transection: laceration of all three layers of the vessel wall.
An important differential diagnosis for this patient include ductus diverticulum and differentiation of ductus diverticulum from a pseudoaneurysm is important.
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- 3. Batra P, Bigoni B, Manning J et-al. Pitfalls in the diagnosis of thoracic aortic dissection at CT angiography. Radiographics. 20 (2): 309-20. Radiographics (full text) - Pubmed citation
- 2. Kuhlman JE, Pozniak MA, Collins J et-al. Radiographic and CT findings of blunt chest trauma: aortic injuries and looking beyond them. Radiographics. 18 (5): 1085-106. Radiographics (abstract) - Pubmed citation