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Case Reports in Surgery
Volume 2015, Article ID 172635, 3 pages
http://dx.doi.org/10.1155/2015/172635
Case Report

Extraskeletal Ewing’s Sarcoma Arising from the Sciatic Nerve: A Diagnostic Challenge

1Peripheral Nerve Injury Unit, Royal National Orthopaedic Hospital, Stanmore, Middlesex HA7 4LP, UK
2Sarcoma Unit, Royal National Orthopaedic Hospital, Stanmore, Middlesex HA7 4LP, UK
3Department of Clinical Oncology, University College Hospital, Euston Road, London NW1 2BU, UK

Received 30 April 2015; Revised 26 June 2015; Accepted 29 June 2015

Academic Editor: Giulio Maccauro

Copyright © 2015 Aadhar Sharma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Ewing’s sarcoma is a common bone tumour of childhood but is a rare occurrence in individuals over 20 years of age. Few cases are reported as originating from peripheral nerves. We present an unusual case of extraosseous Ewing’s sarcoma originating from the sciatic nerve in a 66-year-old patient which had the clinical hallmarks of a benign nerve sheath tumour. Following discussion at a multidisciplinary meeting, excision biopsy of the suspected benign nerve sheath tumour was planned. At operation, the mass had malignant features. Histology confirmed the presence of Ewing’s sarcoma. Due to the morbidity of nerve resection, radiotherapy and chemotherapy were commenced. Ewing’s sarcoma is known to mimic benign pathologies. In this case there were subtle signs of a malignant process in the form of unremitting pain. It is vital to keep in mind the less common tumours that can affect the peripheral nervous system in such cases.