CTICasesRenal Cell Carcinoma with Pulmonary Artery Tumor Embolism
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Imaging findings
A patient with renal cell carcinoma had a very large tumor with extensive involvement of the IVC, crossing to the contralateral side. A CT of the chest showed a large lesion in the left lower lobe pulmonary artery, extending to a segmental vessel bifurcation. This was initially read as pulmonary embolism.
Key takeaways
Given the context of extensive renal cell carcinoma, the pulmonary artery lesion was concerning for tumor rather than glandular embolism. Frozen section confirmed tumor in the left pulmonary artery. The case highlights the importance of considering tumor embolism in patients with known extensive malignancy, even when a pulmonary embolus is suspected.
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