RESUMO
A pineal mass in a patient with acquired immunodeficiency syndrome (AIDS) is reported. Computed tomography (CT) scan revealed a nodular mass in the pineal region with foci of calcification and obstruction of the aqueduct mimicking a pineal tumor. At autopsy, the brain revealed a well-circumscribed lesion with central necrosis in the pineal region suggestive of toxoplasma and involving the periaqueductal area. Susceptibility of a patient with AIDS to opportunistic infections should be considered.
Assuntos
Infecções Oportunistas Relacionadas com a AIDS/diagnóstico , Neoplasias Encefálicas/diagnóstico , Glândula Pineal , Toxoplasmose Cerebral/diagnóstico , Adulto , Autopsia , Diagnóstico Diferencial , Humanos , Masculino , Pinealoma/diagnóstico , Tomografia Computadorizada por Raios XRESUMO
Computed tomographic study of six cases with primary cerebral non-Hodgkin lymphoma are reviewed. Three had a history of intravenous drug abuse and were diagnosed as having acquired immunodeficiency syndrome (AIDS). All cases presented with space occupying lesions in the frontal lobe with the exception of Case 4. Computed tomography demonstrated multiple lesions in AIDS cases whereas non-AIDS lesions were invariably single. The AIDS patients died within 1 year despite radiotherapy as compared with the non-AIDS patients.
Assuntos
Síndrome da Imunodeficiência Adquirida/complicações , Neoplasias Encefálicas/diagnóstico por imagem , Lobo Frontal , Linfoma Difuso de Grandes Células B/diagnóstico por imagem , Lobo Temporal , Tomografia Computadorizada por Raios X , Adulto , Idoso , Neoplasias Encefálicas/etiologia , Feminino , Humanos , Linfoma Difuso de Grandes Células B/etiologia , Masculino , Pessoa de Meia-IdadeRESUMO
A case of third ventricular primary cerebral neuroblastoma with secondary hydrocephalus is reported. Light microscopy showed a cell pattern that resembled either ependymoma or oligodendroglioma. The tumor was confirmed to be neuroblastoma by electron microscopy and immunohistochemistry. Immunoperoxidase staining was positive for neuron-specific enolase and negative for glial fibrillary acidic protein.
Assuntos
Neoplasias do Ventrículo Cerebral/ultraestrutura , Neuroblastoma/ultraestrutura , Adolescente , Neoplasias do Ventrículo Cerebral/diagnóstico por imagem , Neoplasias do Ventrículo Cerebral/metabolismo , Feminino , Proteína Glial Fibrilar Ácida/metabolismo , Humanos , Imuno-Histoquímica , Microscopia Eletrônica , Neuroblastoma/diagnóstico por imagem , Neuroblastoma/metabolismo , Fosfopiruvato Hidratase/metabolismo , Tomografia Computadorizada por Raios XRESUMO
A case of epidural angiolipoma is reported. This tumor rarely occurs in the spinal canal. The most common location is in the thoracic region, and its histogenesis is probably congenital.
