Minim Invasive Neurosurg 2009; 52(1): 32-35
DOI: 10.1055/s-0028-1085455
Case Report

© Georg Thieme Verlag KG Stuttgart · New York

Microsurgical Excision of Multiple Clear Cell Meningiomas of the Cauda Equina: A Case Report

H. Nakajima 1 , K. Uchida 1 , S. Kobayashi 1 , T. Takamura 1 , T. Yayama 1 , H. Baba 1
  • 1Department of Orthopaedics and Rehabilitation Medicine, University of Fukui Faculty of Medical Sciences, Fukui, Japan
Further Information

Publication History

Publication Date:
26 February 2009 (online)


We report the case of a 21-year-old woman who presented with a 2-year history of worsening radicular pain on the right leg. The Valsalvamanoeuvre provoked radicular pain and radiography showed right-convex 36 ° scoliosis. Examination showed slight hypoesthesia on the right L3-S1 dermatomes but abnormal muscle power and reflexes. Magnetic resonance imaging identified cauda equina tumours at the L2-3 and L4 levels. The tumours showed heterogeneously isointense signals on T1-weighted image, hypointense signals on T2-weighted image, and hyperintense signal on gadolinium-enhanced T1-weighted sequences. The tumour was microsurgically extirpated from the cauda equina and resected through multiple small laminotomies. Macroscopically, the tumours were poorly encapsulated, hard in consistency, adherent to the adjacent cauda equinas, irregularly shaped like a “horseradish”, and yellowish-grey in colour. Histopathological diagnosis was clear cell meningioma.



H. Nakajima, MD, PhD 

Department of Orthopaedics and Rehabilitation Medicine

University of Fukui Faculty of Medical Sciences

23-3 Matsuokashimoaizuki



Fukui 910-1193


Phone: +81/776/61 83 83

Fax: +81/776/61 81 25