CTICasesSegmental Pulmonary Artery Osteosarcoma
Imaging findings
CT shows a calcified intraluminal mass occluding the right lower lobe segmental pulmonary artery, mimicking a calcified chronic thromboembolism. Endarterectomy specimen confirmed primary osteosarcoma of the pulmonary artery.
Key takeaways
Pulmonary artery osteosarcoma is a rare subtype of intimal sarcoma. It can present distally in lobar or segmental arteries with prominent calcification/ossification, mimicking chronic thromboembolic disease.
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