title: Atypical growth pattern of a meningioma in an adult.
abstract: A 49-year-old woman presented with a rare atypical growth pattern of meningioma without evidence of dural attachment manifesting as chronic headache associated with transient paresthesia and left motor disorders. On admission, neurological examination showed no abnormalities. Magnetic resonance (MR) imaging revealed a right temporo-parieto-occipital lesion, which appeared to involve the subdural space and filling the cortical sulci. The lesion caused peritumoral white matter edema. The tumor appeared hypointense on T(1)-weighted and hyperintense on T(2)-weighted MR images, with homogeneous enhancement after contrast administration. A biopsy of the lesion was performed. Histological examination indicated that the lesion was a meningioma. Intraparenchymal meningiomas should be considered in the differential diagnosis of intraaxial lesions in patients of any age.
authors.affiliation: Institute of Neurosurgery, Department of Neurosciences, University of Turin, Turin, Italy. michele.lanotte@libero.it
authors.forename: Michele
authors.initials: M
authors.lastname: Lanotte
authors.forename: Rosa
authors.initials: R
authors.lastname: Perez
authors.forename: Riccardo
authors.initials: R
authors.lastname: Boccaletti
authors.forename: Isabella
authors.initials: I
authors.lastname: Castellano
authors.forename: Paola
authors.initials: P
authors.lastname: Cassoni
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ducati
mesh_terms: D001099:Arachnoid / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D014408:Biomarkers, Tumor / Q000378:metabolism; D002536:Cerebral Arteries / Q000473:pathology / Q000503:physiopathology; D018450:Disease Progression; D005260:Female; D006801:Humans; D020547:Lateral Ventricles / Q000473:pathology / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D008579:Meningioma / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D008833:Microcirculation / Q000473:pathology / Q000503:physiopathology; D008875:Middle Aged; D009413:Nerve Fibers, Myelinated / Q000473:pathology; D019635:Neurosurgical Procedures; D010841:Pia Mater / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D013346:Subarachnoid Space / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D013355:Subdural Space / Q000473:pathology / Q000503:physiopathology / Q000601:surgery; D013687:Telencephalon / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery; D016896:Treatment Outcome
chemical_list: D014408:Biomarkers, Tumor