CTICasesInfected Pseudoaneurysm of Ascending Aortic Graft with Sternal Erosion
Imaging findings
A pseudoaneurysm is evident at the site of a prior ascending aortic repair, demonstrating erosion through the sternum cortex. This pseudoaneurysm was found to be infected, growing Staphylococcus. Retrospective review of prior imaging shows early irregularity and outpouching at the graft site approximately one year earlier, illustrating the evolution of the pseudoaneurysm before infection and sternal involvement.
Key takeaways
Pseudoaneurysms can occur following aortic graft repair and can become infected, leading to severe complications such as sternal erosion. Serial imaging may demonstrate the gradual development of the pseudoaneurysm. Infection of a pre-existing pseudoaneurysm is more likely than a primary mycotic pseudoaneurysm.
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