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Magnetic Resonance Imaging Appearance of Primary Spinal Extradural Ewing’s Sarcoma: Case Report and Literature Review

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Abstract

Purpose

Primary spinal extradural Ewing’s sarcoma (PSEES) or primitive neuroectodermal tumor (PNET) is uncommon. The present study summarizes the magnetic resonance (MR) imaging appearance of PSEES.

Methods

Literature search from 1994 to 2012 with our representative case presentation.

Results

Twenty-one patients, 12 males and 9 females, aged 3 weeks to 44 years, were identified. The thoracic spine was most frequently affected, followed by the cervical, cervicothoracic, and thoracolumbar spine. Superior–inferior extension of lesions was three vertebral levels in 7, two in 7, five in 4, four in 1, one in 1 and unknown in 1. PSEESs appeared isointense in 9 cases, hypointense in 2, hyperintense in 1, and no description in 9 on T1-weighted imaging, while hyperintense in 6, hypointense in 3, heterogeneous in 1, and no description in 11 on T2-weighted imaging. Varying enhancement was noted in 13 cases (62 %), with no description of contrast study in the other 8 cases. Dumbbell-shaped configuration of PSEES was found in 5 cases, foraminal widening in 4, and erosions or scalloping of the adjacent vertebral bodies in 4.

Conclusion

The MR imaging appearance of PSEESs is indistinguishable from other tumors. PSEES should be assumed as the differential diagnosis of spinal extradural tumors in pediatric, adolescent, and young adult patients, and prompt surgical exploration should be performed.

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Conflict of Interest

The authors declare that they have no conflict of interest.

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Authors and Affiliations

  1. Department of Neurological Surgery, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, 279-0021, Urayasu, Chiba, Japan

    S. Tsutsumi MD, PhD, Y. Yasumoto & M. Ito

  2. Department of Pediatrics, St. Lukes International Hospital, Tokyo, Japan

    A. Manabe

  3. Department of Neurological Surgery, Juntendo University School of Medicine, Tokyo, Japan

    I. Ogino & H. Arai

Authors
  1. S. Tsutsumi MD, PhD
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  2. Y. Yasumoto
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  3. A. Manabe
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  4. I. Ogino
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  5. H. Arai
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  6. M. Ito
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Corresponding author

Correspondence to S. Tsutsumi MD, PhD.

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Tsutsumi, S., Yasumoto, Y., Manabe, A. et al. Magnetic Resonance Imaging Appearance of Primary Spinal Extradural Ewing’s Sarcoma: Case Report and Literature Review. Clin Neuroradiol 23, 81–85 (2013). https://doi.org/10.1007/s00062-013-0222-1

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  • DOI: https://doi.org/10.1007/s00062-013-0222-1

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