[Tumor pathology].
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.
Meder
J F
JF
Département d'Imagerie Morphologique et Fonctionnelle, Centre Hospitalier Sainte-Anne, 1 rue Cabanis, Paris. meder@chsa.broca.inserm.fr
Brami-Zylberberg
F
F
Oppenheim
C
C
Méary
E
E
Martinez-Lozano
F
F
Delvat
D
D
Frédy
D
D
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