CTICasesTraumatic Aortic Pseudoaneurysm
Imaging findings
Chest radiograph demonstrates mass effect and rightward deviation of the trachea, with dense calcification near the aortic arch. CT angiogram reveals a large, heavily calcified, saccular pseudoaneurysm at the aortic isthmus, resembling a mushroom-like projection off the posterior wall.
Key takeaways
Saccular pseudoaneurysms at the aortic isthmus with heavy calcification are characteristic long-term sequelae of chronic traumatic aortic injury. While these chronic lesions may remain stable for decades without rupturing, they are often treated with endovascular stent grafting once identified to prevent future complications.
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