CTICasesAortic Root Pseudoaneurysm Erosion into Left Atrium
Imaging findings
CT angiography shows a pseudoaneurysm of the aortic root following a catheterization procedure, which has eroded directly through the atrial wall into the left atrium, creating a high-flow aorta-to-left atrial fistula.
Key takeaways
Iatrogenic injury to the aortic root during catheterization or valve replacement can lead to pseudoaneurysm formation. Erosion of the pseudoaneurysm into low-pressure cardiac chambers (such as the left atrium) creates a left-to-left shunt (aorta-to-LA), causing acute high-output heart failure and cardiogenic shock.
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See all cases from January 21, 2022 →