CTICasesInflammatory Myofibroblastic Tumor (Inflammatory Pseudotumor)
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Imaging findings
A large, ugly, partially calcified, and aggressive-looking mass is present in the left hilum, showing dramatic uptake on PET and avid enhancement on MRI. MRI also demonstrates large areas of low signal on T1-weighted imaging due to calcification.
Key takeaways
Inflammatory myofibroblastic tumors (also known as inflammatory pseudotumors or plasma cell granulomas) can present as large, aggressive, calcified masses with avid enhancement, mimicking malignancy. Definitive diagnosis requires biopsy. While they can be locally aggressive, some subtypes are less prone to spread.
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