title: Intraparenchymal meningioma mimicking cavernous malformation: a case report and review of the literature.
abstract: BACKGROUND
  A primary intraparenchymal meningioma located in the subcortical region of the brain without a dural attachment is extremely rare. To the best of our knowledge, this is the first report showing that meningioma can mimic cavernous malformations.
  
  
  METHODS
  We present the case of a 42-year-old German man who presented to our institution with seizure. Both computed tomography and magnetic resonance imaging scans showed characters of an intra-axial subcortical lesion with a 'popcorn' appearance and hemosiderin deposits in the right parietal lobe. The initial diagnosis was cavernous malformation. Intraoperatively, the lesion presented as a subcortical mass that had no connection to the dura or the ventricle. The histological diagnosis showed a WHO Grade 1 'raddled' psammomatous meningioma with extensive metaplastic ossification. A literature review of 29 cases of intraparenchymal meningiomas regarding their clinical presentations, location and management was performed.
  
  
  CONCLUSIONS
  Meningiomas can be found in any region of the brain with and without dural attachment. Intraparenchymal meningiomas can have multiple entities mimicking their presentation. Caution must be used regarding the preoperative differential diagnosis.
authors.forename: Senol
authors.initials: S
authors.lastname: Jadik
authors.forename: Alexandru C
authors.initials: AC
authors.lastname: Stan
authors.forename: Uwe
authors.initials: U
authors.lastname: Dietrich
authors.forename: Terttu A
authors.initials: TA
authors.lastname: Pietilä
authors.affiliation: Department of Neurosurgery, University of Kiel, Arnold-Heller-Str,3, Haus 41, 24105 Kiel, Germany. alaa.elsharkawy@googlemail.com.
authors.forename: Alaa Eldin
authors.initials: AE
authors.lastname: Elsharkawy
mesh_terms: D000328:Adult; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003399:Craniotomy; D003937:Diagnosis, Differential; D006392:Hemangioma, Cavernous / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008579:Meningioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D012640:Seizures / Q000209:etiology / Q000473:pathology*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome