title: A case of an inflammatory myofibroblastic tumor of the mastoid presenting with chronic suppurative otitis media.
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.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, 505 Banpo-dong, Secho-gu, Seoul 137-701, Republic of Korea.
authors.forename: Kwang-Jae
authors.initials: KJ
authors.lastname: Cho
authors.forename: Dong-Hee
authors.initials: DH
authors.lastname: Lee
authors.forename: Sang-Hee
authors.initials: SH
authors.lastname: Jung
authors.forename: Jung-Hyun
authors.initials: JH
authors.lastname: Kim
mesh_terms: D002908:Chronic Disease; D003937:Diagnosis, Differential; D004428:Ear Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D004432:Ear, Middle / Q000473:pathology / Q000601:surgery; D005260:Female; D006104:Granuloma, Plasma Cell / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008416:Mastoid / Q000473:pathology / Q000601:surgery; D008417:Mastoiditis / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D047708:Myofibroma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D010035:Otitis Media, Suppurative / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D038781:Otoscopy; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D018058:Tympanic Membrane Perforation / Q000175:diagnosis / Q000209:etiology / Q000601:surgery