title: [Tumor pathology].
abstract: THE MRI DIAGNOSTIC SUPPORT: Magnetic resonance imaging is an efficient technique for revealing an intercranial tumor, and specifying its topography and loco-regional impact. A macroscopical approach is possible with MRI, since it distinguishes the components: tumoral tissue, cyst, necrosis and hemorrhage. DEPENDING ON THE TUMOR: Assessment of the tumoral limits is easy for extra-axial tumors. However, it is imprecise or even impossible for infiltrating intra-axial tumors. MRI specificity is low, however some lesions such as meningiomas, glioblastomas, arachnoid cysts and neurinomas are evocative.
authors.affiliation: Département d'Imagerie Morphologique et Fonctionnelle, Centre Hospitalier Sainte-Anne, 1 rue Cabanis, Paris. meder@chsa.broca.inserm.fr
authors.forename: J F
authors.initials: JF
authors.lastname: Meder
authors.forename: F
authors.initials: F
authors.lastname: Brami-Zylberberg
authors.forename: C
authors.initials: C
authors.lastname: Oppenheim
authors.forename: E
authors.initials: E
authors.lastname: Méary
authors.forename: F
authors.initials: F
authors.lastname: Martinez-Lozano
authors.forename: D
authors.initials: D
authors.lastname: Delvat
authors.forename: D
authors.initials: D
authors.lastname: Frédy
mesh_terms: D001921:Brain / Q000473:pathology; D001932:Brain Neoplasms / Q000175:diagnosis*; D002543:Cerebral Hemorrhage / Q000175:diagnosis; D006801:Humans; D008279:Magnetic Resonance Imaging; D009336:Necrosis; D012680:Sensitivity and Specificity