Abstract
We report a case of an inflammatory myofibroblastic tumor (IMT) of the sinonasal tract in a 68-year-old man. The patient received a total maxillectomy and postoperative radiation 20 years ago. A granuloma-like lesion occurred from the cranial base and maxillary sinus on the side of resection, and gradually increased. The tumor was surgically resected. Histological examination showed fibroblast-like spindle cells with inflammatory cells. The tumor cells were reactive with vimentin and SMA and negative with ALK, desmin, and cytokeratin. IMT is originally referred to as an inflammatory pseudotumor or plasma cell granuloma.
