title: [Isolated pleural metastases from an atypical meningioma].
abstract: BACKGROUND
  Less than 2 per 1,000 meningiomas are complicated by extra-cranial metastases. These are most often found in the lung parenchyma, liver or lymph nodes. They almost always occur in anaplastic meningiomas (grade III according to OMS) and much more rarely in atypical meningiomas (grade II).
  
  
  METHODS
  We report a case of pleural metastases from a primary frontal atypical meningioma with no other extra-cranial spread.
  
  
  CONCLUSIONS
  Poorly differentiated meningioma presents many morphological and immuno-histochemical similarities to malignant mesothelioma. For this reason the diagnosis of pleural metastase from a meningioma cannot be made without knowledge of the primary meningeal tumour and its histological type.
authors.affiliation: Service d'Anatomie Pathologique, Hôpital Avicenne, 125 route de Stalingrad, 93009 Bobigny.
authors.forename: M
authors.initials: M
authors.lastname: Yacoub
authors.forename: J-M
authors.initials: JM
authors.lastname: Naccache
authors.forename: M
authors.initials: M
authors.lastname: Kujas
authors.forename: D
authors.initials: D
authors.lastname: Valeyre
authors.forename: M
authors.initials: M
authors.lastname: Kambouchner
mesh_terms: D000368:Aged; D017809:Fatal Outcome; D005260:Female; D005625:Frontal Lobe / Q000473:pathology; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000556:secondary*; D008577:Meningeal Neoplasms / Q000175:diagnosis / Q000473:pathology*; D008579:Meningioma / Q000175:diagnosis / Q000473:pathology*