CTICasesEndobronchial Inflammatory Myofibroblastic Tumor Mimicking Carcinoid
Imaging findings
A 22-year-old presents with left lower lobe collapse. CT shows a proximal, avidly enhancing endobronchial lesion at the left mainstem bronchus near the carina, initially favored to represent a carcinoid tumor given its vascularity and central airway location.
Key takeaways
Endoscopic resection revealed an inflammatory myofibroblastic tumor rather than the favored carcinoid -- a reminder to keep IMT on the differential for a vascular, centrally located endobronchial mass in a young patient, even though IMTs more typically present as larger, more peripheral pulmonary masses.
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