Abstract:ObjectiveTo investigate the clinical features, diagnosis, treatment and prognosis of maxillary sinus inflammatory myofibroblastoma so as to improve the awareness and treatment level of the doctors for avoidance of misdiagnose and missed diagnosis.MethodsClinical data of one patient suffering from maxillary sinus inflammatory myofibroblastoma were analyzed retrospectively with literature review.ResultsThe CT scan showed a low density mass in maxillary sinus with orbital invasion, compression and thinning of adjacent sinus walls. Enhanced CT scan revealed markedly heterogeneous reinforcement. MRI scan showed a round mass shadow of slightly high or equal T2 and T1 signals with obscure boundary. The pathology confirmed that the tumor was mainly composed of spindleshaped myofibroblasts and inflammatory cells. Immunohistochemistry indicated positive expressions of SMA and VIM, and negative expression of CK. The patient was followed up for 9 months. Postoperative CT scan showed no obvious neoplasm in the maxillary sinus cavity.ConclusionInflammatory myofibroblastoma of maxillary sinus is very rare and the diagnosis mainly depends on pathology and immunohistochemistry. Radical resection is the preferred treatment method. Preoperative embolization can be used for the treatment of tumor with large size and abundant blood supply.
