Journal of
Neuroscience and Behavioral Health

  • Abbreviation: J. Neurosci. Behav. Health
  • Language: English
  • ISSN: 2141-2286
  • DOI: 10.5897/JNBH
  • Start Year: 2009
  • Published Articles: 65

Case Report

A case of intrapelvic sciatic nerve schwannoma presenting as piriformis syndrome

Koshi Ninomiya*
  • Koshi Ninomiya*
  • Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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Koichi Iwatsuki
  • Koichi Iwatsuki
  • Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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Yu-ichiro Ohnishi
  • Yu-ichiro Ohnishi
  • Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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Takashi Moriwaki
  • Takashi Moriwaki
  • Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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Toshiki Yoshimine
  • Toshiki Yoshimine
  • Department of Neurosurgery, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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  •  Received: 08 March 2014
  •  Accepted: 01 April 2014
  •  Published: 30 April 2014

Abstract

A 36-year-old man presented with lower back and right lower extremity pain for 10 years and right inguinal pain for 1 year. Magnetic resonance imaging showed a right sciatic nerve mass at the right ventral piriformis, causing sciatica and piriformis syndrome. The tumor was totally resected by a posterior approach. The postoperative histopathological diagnosis was schwannoma (World Health Organization grade 1). Immediately after the operation, his preoperative symptoms disappeared completely.
 
Key words: Intrapelvic sciatic nerve schwannoma, sciatica, piriformis syndrome.