18F-FDG PET/CT image of pericardial inflammatory myofibroblastic tumor.

Abstract

Pericardial inflammatory myofibroblastic tumor (IMT) is very rare. Herein, we report fluorine-18-fluorodeoxyglucose (¹⁸F-FDG) positron emission tomography/computed tomography (PET/CT) findings of pericardial IMT in a 57-year-old woman. On conventional image, it presented as a pericardial mass with heterogeneous delay enhancement. On ¹⁸F-FDG PET/CT image, this lesion had mild ¹⁸F-FDG uptake with a maximum standardized uptake value (SUV_max) of 1.84. The postoperative pathology supported a diagnosis of IMT. Our case hints us that IMT should be regarded as a differential diagnosis when we meet a solitary pericardial mass with ¹⁸F-FDG uptake.