title: Primary spinal intradural extraskeletal Ewing sarcoma mimicking a giant nerve sheath tumor: case report and review of the literature.
abstract: Primary intradural extraskeletal Ewing sarcoma is a very rare form of malignant neoplasm. Only few cases have been reported on the literature. Here, we report a case of a 14-year-old boy who had a chief complaint of pain and tingling in the right lower limb. The patient initially seemed to have a giant nerve sheath tumor but was eventually diagnosed with intradural extraskeletal Ewing sarcoma arising from the nerve roots of the cauda equine. The literature with regard to primary spinal intradural extraskeletal Ewing sarcoma is reviewed.
authors: Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University Hangzhou, Zhejiang 310009, China.
authors: Mingfei
authors: M
authors: Zhao
authors: Department of Pathology, Second Affiliated Hospital, School of Medicine, Zhejiang University Hangzhou, Zhejiang 310009, China.
authors: Buyi
authors: B
authors: Zhang
authors: Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University Hangzhou, Zhejiang 310009, China.
authors: Feng
authors: F
authors: Liang
authors: Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University Hangzhou, Zhejiang 310009, China.
authors: Jianmin
authors: J
authors: Zhang
mesh_terms: D000293:Adolescent; D001706:Biopsy; D002420:Cauda Equina / Q000473:pathology* / Q000601:surgery; D003937:Diagnosis, Differential; D004388:Dura Mater / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018317:Nerve Sheath Neoplasms / Q000473:pathology*; D011237:Predictive Value of Tests; D012512:Sarcoma, Ewing / Q000150:complications / Q000473:pathology* / Q000601:surgery; D013120:Spinal Cord Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome; D047368:Tumor Burden
keywords: Intradural; extraskeletal ewing sarcoma; nerve sheath tumor; spine