title: [Imaging of meningeal hemangiopericytomas].
abstract: OBJECTIVE
  To study the imaging findings of meningeal hemangiopericytomas.
  
  
  METHODS
  and method: Four cases of meningeal hemangiopericytomas are reported, two involving the spine and two intracranial in location.
  
  
  RESULTS
  An extra-axial and heterogeneous pedunculated mass, without calcification should suggested a diagnosis of hemangiopericytoma especially if a bone erosion is noted; meningioma is the main differential diagnosis.
  
  
  CONCLUSIONS
  CT scan as well as MR imaging are not specific but may provide findings consistent with a diagnosis of hemangiopericytoma. A long follow up of these patients is required because of frequent recurrences and delayed metastases.
authors.affiliation: Service de Neuroradiologie, CHU Bretonneau, 37044 Tours Cedex, France.
authors.forename: K
authors.initials: K
authors.lastname: Tayoro
authors.forename: Jp
authors.initials: J
authors.lastname: Cottier
authors.forename: M
authors.initials: M
authors.lastname: Jan
authors.forename: D
authors.initials: D
authors.lastname: Herbreteau
mesh_terms: D000328:Adult; D006393:Hemangiopericytoma / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000473:pathology*; D008875:Middle Aged
vernacular_title: Imagerie des hémangiopéricytomes méningés.