title: [Magnetic resonance imaging of the intraventricular cavernomas: diagnostic aspects].
abstract: Cavernomas are vascular malformations that typically affect the white matter of cerebral hemispheres and brain stem. They are angiographically occult lesions that depend on magnetic resonance imaging (MRI) for their diagnosis, presenting a hypointense perilesional ring caused by hemossiderin deposition as seen in T2 sequences. The ventricular location is rare, and image features may differ. We present two cases with diagnosis made only by histopathologic examination, due to a lack of classic image findings. Cavernous hemangiomas must be included in the differential diagnosis of intraventricular tumors, and total surgical resection is the treatment of choice. Perilesional ring as demonstrated by MRI, must not be expected when dealing with such lesions.
authors.affiliation: Serviço de Neurocirurgia, Hospital Nossa Senhora das Graças, Curitiba, PR, Brasil. claudiotatsui@hotmail.com
authors.forename: Cláudio Esteves
authors.initials: CE
authors.lastname: Tatsui
authors.forename: Andrei
authors.initials: A
authors.lastname: Koerbel
authors.forename: Daniel Monte-Serrat
authors.initials: DM
authors.lastname: Prevedello
authors.forename: Ricardo Alexandre
authors.initials: RA
authors.lastname: Hanel
authors.forename: César Vinícius
authors.initials: CV
authors.lastname: Grande
authors.forename: Marlus Sidney
authors.initials: MS
authors.lastname: Moro
authors.forename: João Cândido
authors.initials: JC
authors.lastname: Araújo
mesh_terms: D000293:Adolescent; D002551:Cerebral Ventricle Neoplasms / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006392:Hemangioma, Cavernous / Q000175:diagnosis* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged
vernacular_title: Ressonância magnética dos cavernomas intraventriculares: aspectos diagnósticos.