P. E. S. Saraiva

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We report the case of a child with horizontal gaze palsy, pendular nystagmus, and discrete thoracolumbar scoliosis. MR imaging of the brain depicted pons hypoplasia with an absence of the facial colliculi, hypoplasia, butterfly configuration of the medulla, and the presence of a deep midline pontine cleft (split pons sign). These MR imaging findings suggest(More)
By means of unilateral intracollicular injections of horseradish peroxidase (HRP), the cells of origin of the tectotectal projection in cats were detected in the opposite colliculus. The 9 injected animals were divided into two groups in accordance to the location of their injections along the collicular rostrocaudal axis. The majority of the labeled cells(More)
We report a clinical and imaging case of suspected herpes simplex encephalitis subsequently diagnosed as neurosyphilis based on positive antibodies in the CSF. MRI of the brain showed cortical and subcortical lesions in the mesial temporal region, septal area, insula and cingulated gyrus of the right cerebral hemisphere. Neurosyphilis should be included in(More)
The natural history of developmental venous anomalies (DVAs) is said to be relatively benign. We herein report the clinical case of a 9-year-old female child with sudden right hemiparesis. An ischaemic infarct secondary to an isolated spontaneous thrombosis of a DVA was diagnosed by brain magnetic resonance imaging, further confirmed by digital subtraction(More)
Absence of tectotectal pathway in rabbits is demonstrated by means of anatomical (retrograde axonal transport of horseradish peroxidase (HRP)) and of physiological (electrical stimulation of the superior colliculus (SC)) methods. Despite the absence of that pathway it was still possible to verify the occurrence of electrophysiological correlates of(More)
Visual areas V1, V2 and MT (V5) were identified through myeloarchitectonic criteria and their sizes estimated in a flattened map of caudal cerebral cortex in the marmosetCallithrix penicillata. The ratio MT/V1 in this species is similar to values reported for other species of primates, but the ratio V2/V1 in Callithrix penicillata is smaller than that in(More)
A 33-year-old female with a longstanding history of seizures was admitted to our hospital with subarachnoid haemorrhage (SAH). Computed tomography (CT), magnetic resonance imaging (MRI) and digital subtraction angiography (DSA) depicted a vascular fat-containing lesion overlying a right frontal cortical polymicrogyria. The diagnosis of angiolipoma was(More)