RESUMO
The magnetic resonance and CT findings in a 10-year-old patient with neurologic abnormalities associated with Epstein-Barr virus infection are reported. Multiple focal lesions of various sizes were demonstrated with involvement at one time or another of both cerebral hemispheres, the right thalamus, the right cerebellar hemisphere, and the right optic nerve. A unique finding was the fleeting nature of the lesions with new lesions appearing as others resolved. The clinical presentation, laboratory studies, and radiologic patterns suggest the diagnosis of immune-related acute disseminated encephalomyelitis associated with Epstein-Barr virus infection.
Assuntos
Encéfalo/patologia , Encefalomielite/diagnóstico , Infecções por Herpesviridae/diagnóstico , Imageamento por Ressonância Magnética , Criança , Encefalomielite/etiologia , Feminino , Hemiplegia/etiologia , Herpesvirus Humano 4 , Humanos , Convulsões/etiologia , Tomografia Computadorizada por Raios XRESUMO
The CT findings after interstitial radiation therapy for brain tumors have not been extensively described. We evaluated retrospectively the CT scans of 13 patients who were treated with brachytherapy for malignant glioma. We found no typical CT appearance that differentiates recurrent tumor from radiation effect. After undergoing brachytherapy, eight of the 13 patients scanned demonstrated enhancement of brain tissue beyond the margins of the original enhancing tumor mass. In most cases, the pattern of enhancement diminished and extended more peripherally from the central necrotic area with time. We also report a new CT finding of focal calcification developing at the site of the radioactive implant.
