RESUMO
Accessory ossicles of the foot are commonly mistaken for fractures. The accessory navicular is one of the most common accessory ossicles of the foot. There is a higher incidence in women and the finding might be bilateral in 50-90%. This entity is usually asymptomatic, although populations with medial foot pain have a higher prevalence. Three types of accessory navicular bone have been described. The type II accessory navicular is the most commonly symptomatic variant with localized chronic or acute on chronic medial foot pain and tenderness with associated inflammation of overlying soft tissues. Plain radiographic identification of the accessory navicular is insufficient to attribute symptomatology. Ultrasound allows for comparison with the asymptomatic side and localization of pain. Bone scintigraphy has a high sensitivity but positive findings lack specificity. Magnetic resonance imaging is of high diagnostic value for demonstrating both bone marrow and soft tissue oedema.
Assuntos
Diagnóstico por Imagem , Deformidades do Pé/diagnóstico , Ossos do Tarso/anormalidades , Adulto , Diagnóstico Diferencial , Feminino , Humanos , Pessoa de Meia-IdadeRESUMO
Murray Valley encephalitis (MVE) is caused by a flavivirus related to West Nile and St. Louis encephalitis viruses. We report a case of MVE resulting in quadriplegia and respiratory failure. MR imaging demonstrated thalamic hyperintensity on T2-weighted images, with similar involvement of the red nucleus, substantia nigra, and cervical cord. These findings preceded serologic diagnosis and are similar to those of Japanese encephalitis. In the appropriate setting, thalamic T2 hyperintensity is suggestive of flavivirus infection.
Assuntos
Encefalite por Arbovirus/diagnóstico , Encefalite por Arbovirus/virologia , Imageamento por Ressonância Magnética , Diagnóstico Diferencial , Vírus da Encefalite do Vale de Murray , Encefalite por Arbovirus/líquido cefalorraquidiano , Feminino , Humanos , Pessoa de Meia-Idade , Tomografia Computadorizada por Raios XRESUMO
Intracranial aneurysms are rare complications of head injury. The primary goals in the management of patients harbouring these lesions are early identification and intervention to prevent bleeding or rebleeding. The authors present a case of traumatic false aneurysm of the callosomarginal artery which was diagnosed following head injury and managed successfully with a good outcome.
Assuntos
Falso Aneurisma/etiologia , Artéria Cerebral Anterior/lesões , Traumatismos Craniocerebrais/complicações , Giro do Cíngulo/irrigação sanguínea , Aneurisma Intracraniano/etiologia , Adulto , Falso Aneurisma/diagnóstico por imagem , Angiografia Digital , Artéria Cerebral Anterior/diagnóstico por imagem , Traumatismos Craniocerebrais/diagnóstico por imagem , Feminino , Humanos , Aneurisma Intracraniano/diagnóstico por imagem , Tomografia Computadorizada por Raios XRESUMO
Excessive consumption of alcohol is well recognized to have specific neurologic sequelae. The MRI and CT findings in these syndromes is presented and correlated with pathological findings and suspected pathogenesis. The role of imaging in both the diagnosis and monitoring of patients is discussed.