CTICasesSeptic Emboli from Prosthetic Tricuspid Valve Endocarditis
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Imaging findings
Pulmonary imaging reveals multiple areas of consolidation, including a peripheral mass-like lesion, and nodules, representing septic emboli and infarcts. A characteristic 'blood orange sign' is observed in a peripheral infarct, with a rim of enhancement and a central unenhanced core. Vegetation is clearly visible on the prosthetic tricuspid valve prosthesis.
Key takeaways
Prosthetic valve endocarditis can lead to systemic septic emboli, particularly to the lungs in cases of right-sided valve involvement. These emboli can result in a spectrum of pulmonary findings, including consolidations, nodules, and septic infarcts, some of which may exhibit a distinctive 'blood orange sign' on contrast-enhanced imaging. The direct visualization of a vegetation on the prosthetic valve confirms the diagnosis.
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