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  • Title: Ewing sarcoma mimicking a peripheral nerve sheath tumor.
    Author: Mitchell BD, Fox BD, Viswanathan A, Mitchell AH, Powell SZ, Cech DA.
    Journal: J Clin Neurosci; 2010 Oct; 17(10):1317-9. PubMed ID: 20594851.
    Abstract:
    We describe the first patient with an extradural, extramedullary Ewing's sarcoma tumor mimicking a nerve sheath tumor with no overt evidence of metastasis. A 28-year-old woman with no past medical history presented with a progressive 3-year history of low back pain and right-sided lower extremity radiculopathy after having failed conservative therapies. MRI of the lumbar spine revealed a right-sided enhancing, dumbbell-shaped lesion at the right neural foramen appearing to originate from the L4 nerve root, suspicious for a peripheral nerve sheath tumor or schwannoma. The patient and findings are discussed in the context of the literature, including an update on the relatively recent diagnostic redesignation of the Ewing's sarcoma family tumors.
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