title: Malignant peripheral nerve sheath tumor in the parapharyngeal space: tumor spread through the eustachian tube.
abstract: We report the CT and MR findings in a patient with malignant peripheral nerve sheath tumor in the parapharyngeal space who had neither a family history nor stigmata of neurofibromatosis. A high-resolution CT scan of the temporal bone revealed bony erosion and widening of both the foramen ovale and the bony portion of the eustachian tube. A temporal bone MR image showed an intensely enhancing solid mass in the parapharyngeal space, which extended into the middle ear cavity via the eustachian tube.
authors: Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
authors: J H
authors: JH
authors: Lee
authors: H K
authors: HK
authors: Lee
authors: C G
authors: CG
authors: Choi
authors: D C
authors: DC
authors: Suh
authors: K S
authors: KS
authors: Lee
authors: S K
authors: SK
authors: Khang
mesh_terms: D000328:Adult; D003390:Cranial Nerve Neoplasms / Q000175:diagnosis* / Q000473:pathology; D004432:Ear, Middle / Q000473:pathology; D005064:Eustachian Tube / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008340:Mandibular Nerve / Q000473:pathology*; D009361:Neoplasm Invasiveness; D018317:Nerve Sheath Neoplasms / Q000175:diagnosis* / Q000473:pathology; D010610:Pharyngeal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D013701:Temporal Bone / Q000473:pathology; D014057:Tomography, X-Ray Computed