CTICasesInflammatory Myofibroblastic Tumor (IMT)
Imaging findings
A large, solitary pulmonary mass, detected on chest radiographs, is highly FDG-avid on PET-CT. Computed tomography characterizes it as a circumscribed, heterogeneously attenuating lesion containing large flecks of dystrophic calcification.
Key takeaways
Inflammatory myofibroblastic tumor (IMT) is a rare mesenchymal tumor that can present as a large, solitary pulmonary mass, often with FDG avidity and dystrophic calcification. Immunohistochemistry, particularly ALK receptor tyrosine kinase staining, is important for diagnosis and prognosis, as ALK-negative cases may have an adverse prognosis.
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