title: Extraskeletal Ewing's sarcoma of the parapharyngeal space.
abstract: Extraskeletal Ewing's sarcoma (EES) is rarely found in the head and neck region. We report here a case of EES of the parapharyngeal space in a 53-year-old man who presented with blurred vision, dysphagia, hoarseness and right facial numbness. CT examination showed a large, seemingly well-defined soft tissue mass in the right parapharyngeal space with skull base destruction and intracranial extension. The patient showed poor response to chemotherapy and radiotherapy and died 6 months after initial presentation. A review of the literature revealed no previous reports of EES occurring in the parapharyngeal space.
authors.affiliation: Department of Radiology, Chang Gung Memorial Hospital, 5 Fu-Shing Street, Kwei Shan, Tao Yuan, Taiwan.
authors.forename: S-H
authors.initials: SH
authors.lastname: Ng
authors.forename: S-F
authors.initials: SF
authors.lastname: Ko
authors.forename: Y-C
authors.initials: YC
authors.lastname: Cheung
authors.forename: H-F
authors.initials: HF
authors.lastname: Wong
authors.forename: S-M
authors.initials: SM
authors.lastname: Jung
mesh_terms: D017809:Fatal Outcome; D006801:Humans; D008297:Male; D008875:Middle Aged; D010610:Pharyngeal Neoplasms / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000532:radiotherapy; D012512:Sarcoma, Ewing / Q000000981:diagnostic imaging* / Q000188:drug therapy / Q000532:radiotherapy; D014057:Tomography, X-Ray Computed / Q000379:methods*