title: Extraskeletal Ewing's sarcoma presenting with neurological symptoms. Report of two cases.
abstract: Extraosseous Ewing's sarcoma (EES) is an uncommon condition that may develop in soft tissues at any location. Neurological symptoms leading to diagnosis have been reported exceptionally. We report two cases of EES in patients aged 16 and 74 years, presenting with cauda equina syndrome and radicular ulnar involvement respectively. Radiological images showed a paraspinal mass in both cases and biopsy disclosed the histological features of Ewing's sarcoma. EES should be kept in mind in the differential diagnosis of paraspinal soft tissues tumours at any age.
authors.affiliation: Neurology Unit, Hospital de Insalud de Alcañiz, D. Repollés 2, 44600 Alcañiz, Spain.
authors.forename: P J
authors.initials: PJ
authors.lastname: Modrego
authors.forename: M A
authors.initials: MA
authors.lastname: Pina
mesh_terms: D000293:Adolescent; D000368:Aged; D003937:Diagnosis, Differential; D017809:Fatal Outcome; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011128:Polyradiculopathy / Q000175:diagnosis / Q000209:etiology*; D012512:Sarcoma, Ewing / Q000150:complications* / Q000000981:diagnostic imaging*; D012983:Soft Tissue Neoplasms / Q000150:complications* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D020424:Ulnar Neuropathies / Q000175:diagnosis / Q000209:etiology