CTICasesEmbolized Fractured Pulmonary Artery Stent Fragments
Imaging findings
A patient with tetralogy of Fallot had a pulmonary artery stent that underwent a stent-in-stent revision. Radiographs show disruption and fracture of the inferior portion of the original stent, and small linear metallic fragments are now seen peripherally in the lung on frontal and lateral views.
Key takeaways
Pulmonary artery stents can fracture, and during a stent-in-stent revision fragments may break off and embolize peripherally into the pulmonary arteries. Recognizing linear metallic densities in the lung together with visible disruption of the stent identifies embolized fractured stent fragments as the source.
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