CTICasesPulmonary Artery Intimal Sarcoma
Imaging findings
CT shows an ovoid, sausage-shaped filling defect (sausage sign) in the main and lobar pulmonary arteries, demonstrating rapid enlargement over 4 weeks. Histology of the resected specimen confirmed intimal sarcoma with intimal invasion.
Key takeaways
Pulmonary artery sarcomas are rare malignancies that present as sausage-like filling defects. They grow rapidly and are frequently misdiagnosed as acute or non-resolving thromboembolisms.
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