CTICasesFloating Right Atrial Thrombus in Transit
Imaging findings
Echocardiography shows a highly mobile, round mass in the right atrium that prolapses through the tricuspid valve. CT demonstrates a long thrombus tail extending down the superior vena cava and dangling into the atrium, associated with massive PE.
Key takeaways
A right atrial thrombus 'in transit' represents a dislodged deep venous thrombus temporarily caught in the right heart. CT can show the thrombus tail extending from the SVC or IVC. This is a medical emergency carrying a high risk of fatal PE.
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