Abstract
Inflammatory myofibroblastic tumors, also known as inflammatory pseudotumors, include a diverse group of lesions characterized by inflammatory cell infiltration and variable fibrotic responses. Their occurrence in the temporal bone is unusual. We present a case of an inflammatory myofibroblastic tumor of the mastoid bone in a 55-year-old female who complained of repeated otorrhea and a hearing impairment. On an otoscopic exam, her tympanic membrane was perforated. The computed tomographic imaging revealed a soft-tissue density-filled middle ear and mastoid with sclerotic bony change. The initial clinical diagnosis was chronic suppurative otitis media and mastoiditis, and the patient underwent a canal-wall down tympanomastoidectomy through a retroauricular approach. A histopathologic examination showed the presence of myofibroblastic spindle cells with mixed inflammatory infiltrates, and the pathologic diagnosis was inflammatory myofibroblastic tumor.
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