Thymic Carcinoid
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Imaging findings
An enormous anterior mediastinal mass in a middle-aged man with SVC stents in place. The mass was unresectable and showed insinuation into the pericardium. It had only minimally increased in size over a year.
Key takeaways
This case demonstrates an unusually large thymic carcinoid, confirmed by percutaneous and open biopsies as an atypical carcinoid. Despite its size and local invasion causing significant mass effect (left lung collapse, venous congestion), its growth was slow over a year. The presentation highlights that carcinoid tumors, though typically slow-growing, can present as very large mediastinal masses.
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