CTICasesRCC Intravascular Metastasis (Tumor Thrombus)
Imaging findings
Chest CT shows a classic renal cell carcinoma (RCC) tumor thrombus extending into the renal vein, IVC, and right atrium. Lung windows reveal advanced metastatic disease characterized by hypervascular, beaded vascular structures indicating intravascular tumor emboli/metastases.
Key takeaways
Renal cell carcinoma is highly hypervascular and prone to vascular invasion. Intravascular pulmonary metastases can manifest as beaded vessels and segmentally expanded arteries containing mixed thrombus and tumor cells.
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