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Paradoxical Embolus-in-Transit

A paradoxical embolus typically originates in the venous circulation and travels to the arterial circulation through a right-to-left shunt or defect. This video demonstrates an embolus-in-transit between the right and left atrium (the echodense structure straddling the interartrial septum) in an older woman with lower extremity deep vein thromboses (DVTs) and cerebral infarcts.

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