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The authors report the case of a 70-year-old man with no significant medical history, in whom a peripheral PNET was demonstrated that, based on clinical and imaging findings, manifested as a nonspecific intrathecal tumoral process arising from the cauda equina. Although this lesion is rare in the elderly, the authors\u2019 case illustrates the importance of making this diagnosis as early as possible so that a treatment plan may be devised. The use of chemotherapy in association with radiotherapy in relation to the resection of the tumor should be reconsidered.<\/jats:p>","DOI":"10.3171\/spi.2006.5.1.68","type":"journal-article","created":{"date-parts":[[2008,1,24]],"date-time":"2008-01-24T13:13:45Z","timestamp":1201180425000},"page":"68-71","source":"Crossref","is-referenced-by-count":11,"title":["Peripheral primitive neuroectodermal tumor of the cauda equina in an elderly patient"],"prefix":"10.3171","volume":"5","author":[{"given":"Elizabeth","family":"Fabre","sequence":"first","affiliation":[{"name":"Department of Medical Oncology, H\u00f4pital Europ\u00e9en Georges Pompidou, Paris; Departments of Neuroradiology and Neurosurgery, H\u00f4pital Piti\u00e9-Salp\u00e9tri\u00e8re, Paris; and Departments of Pathology and Neurosurgery, H\u00f4pital Henri Mondor, Cr\u00e9teil, 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