CTICasesFibrosing Mediastinitis with SVC Invasion
Imaging findings
Chest radiograph and CT show a large right hilar mass with dense calcifications. The mass causes severe right pulmonary artery stenosis, complete occlusion of the right superior pulmonary vein, and extends directly into the lumen of the superior vena cava (SVC) with extensive collateral veins.
Key takeaways
Fibrosing mediastinitis is a rare complication of histoplasmosis characterized by a dense fibrotic mass. It can compress or directly invade adjacent vascular structures (like the SVC), mimicking a sarcoma or mediastinal malignancy.
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