title: Inflammatory myofibroblastic tumor of the temporal bone.
abstract: Inflammatory myofibroblastic tumors include a diverse group of lesions characterized by inflammatory cell infiltration and variable fibrotic responses. Occurrence in the temporal bone is unusual. We present CT and MR imaging findings of an inflammatory myofibroblastic tumor of the temporal bone in a 26-year-old patient with repeated paroxystic episodes of rotatory vertigo that occurred over a few days. CT and MR imaging revealed a homogeneously enhancing soft-tissue mass of the right mastoid with bone erosion of the tegmen and extensive dural thickening. The mass resembled a malignant tumor, and the patient underwent an extended mastoidectomy through a retroauricular approach. Microscopic examination showed myofibroblastic spindle cells with mixed inflammatory infiltrate, and the pathologic diagnosis was inflammatory myofibroblastic tumor.
authors: Department of Radiology, University of Brescia, Brescia, Italy.
authors: Roberto
authors: R
authors: Gasparotti
authors: Diego
authors: D
authors: Zanetti
authors: Andrea
authors: A
authors: Bolzoni
authors: Paola
authors: P
authors: Gamba
authors: Maria L
authors: ML
authors: Morassi
authors: Marco
authors: M
authors: Ungari
mesh_terms: D000328:Adult; D006104:Granuloma, Plasma Cell / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008416:Mastoid / Q000000981:diagnostic imaging / Q000473:pathology; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed