title: Paraganglioma of the filum terminale mimicking neurinoma: Case report.
abstract: BACKGROUND
  Paraganglioma of the filum terminale is an uncommon tumor of cauda equina region. Lumbar radiculopathies are revelations that can get complicated from cauda equina syndrome. Magnetic resonance imaging (MRI) allows the diagnosis without distinguishing it from a neurofibroma. Only histopathological study can bring certainty in the diagnosis. The treatment of choice is a complete removal.
  
  
  METHODS
  We report a case of paraganglioma of the filum terminale in a 74-year-old female patient, admitted for cauda equina syndrome, which has been progressing for 2 years. MRI of medulla objectified an extramedullary lesion at L3-L4, diagnosed as neurinoma. A complete resection of the tumor was performed with a section of the filum terminale, which she was taking since birth. Histology confirmed the diagnosis of paraganglioma. The clinical course was characterized by a complete recovery of the deficit.
  
  
  CONCLUSIONS
  Through this case report, the authors discuss clinical and radiological aspects of this tumor, as well as the management in the light of published data.
authors.affiliation: Department of Neurosurgery, Ibn Rochd UHC, Hassan II University, Casablanca, Morocco.
authors.forename: Said
authors.initials: S
authors.lastname: Hilmani
authors.affiliation: Department of Neurosurgery, Ibn Rochd UHC, Hassan II University, Casablanca, Morocco.
authors.forename: Trezor
authors.initials: T
authors.lastname: Ngamasata
authors.affiliation: Department of Anatomic Pathology, Ibn Rochd UHC, Hassan II University, Casablanca, Morocco.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Karkouri
authors.affiliation: Department of Neurosurgery, Ibn Rochd UHC, Hassan II University, Casablanca, Morocco.
authors.forename: Abdessamad
authors.initials: A
authors.lastname: Elazahri
keywords: Cauda equina; neuroendocrine tumor; paraganglioma