[Inflammatory myofibroblastic tumor of the paranasal sinus：three cases report]

The clinical manifestations of paranasal sinusitis were similar to those of chronic sinusitis. The main manifestations were recurrent nasal congestion,nasal obstruction,such as invasion of the surrounding tissue,local compression. Clinical manifestations were usually nonspecific. CT imaging could display the size,range of the tumor and its relationship with the surrounding tissues. Inflammatory myofibroblastic tumor is a low-grade malignant tumor and frequently misdiagnosed. Diagnosis depends on the pathological examination.Complete surgical resection is the preferred method of treatment. Adjuvant treatment included radiotherapy,chemotherapy and hormone therapy. recurrence and death was not uncommon.