CTICasesSeptic Pulmonary Emboli and Mycotic Aneurysms
Imaging findings
CT chest shows multifocal, bilateral, and cavitating peripheral pulmonary nodules with surrounding ground-glass halos (septic emboli), associated with multiple shaggy, focal aneurysmal dilations of segmental and subsegmental pulmonary arteries (mycotic aneurysms/pseudoaneurysms) in a patient with tricuspid valve MSSA endocarditis.
Key takeaways
Septic pulmonary emboli are a classic complication of right-sided infective endocarditis (most commonly involving the tricuspid valve). The septic emboli can infect the arterial wall, leading to the destruction of the elastic lamina and the formation of mycotic aneurysms (or pseudoaneurysms), which carry a high risk of rupture and massive hemoptysis.
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