Arquivos de neuro-psiquiatria
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Case Reports
Median nerve SEP after a high medullary lesion. Preserved N18 and absent P14 components. Case report.
Median nerve SEPs recorded from a patient with a high medullary lesion are described. The lesion involved the anteromedial and anterolateral right upper third of the medulla, as documented by MRI. Forty one days after the lesion, left median nerve SEP showed preserved N18 and absent P14 and N20 components; stimulation of the right median nerve evoked normal responses. These findings agree with the proposition that low medullary levels are involved in the generation of the N18 component of the median nerve SEP.
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Cysticercosis is the most ordinary parasitary disease involving the nervous system. The involvement of the spine is rare, ranging from 0.7% to 5.8%, and the intramedullary incidence is rather uncommon. ⋯ Forty-five cases of intramedullary cysticercosis were found in the literature review. We conclude that although it is a rare pathology, intramedullary cysticercosis should be included in the differential diagnosis of intramedullary lesions, mainly in cases of patients with previous diagnosis for neurocysticercosis and also of those who live in endemic areas.
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Biography Historical Article
[Ataxic instable Alajouanine-Akerman's hand: recovery of a semiologic sign].
It is aimed to recover, considering its historical value, a semiological sign described in 1931 by an eminent neurologist of Rio de Janeiro, together with a master of the French neurology. In the article by Alajouanine and Akerman, named "Attitude of the hand in an astereognostic monobrachial crisis of multiple esclerosis", a semiologic alteration was described which was characterized by "an instability in the attitude of the fingers, which is observed mainly with the hand extended in the attitude of swearing". This attitude of hand worsened a lot with the eyes closed and was accompanied by sensory ataxia, astereognosis, and impaired deep sensation in the affected member. From the original article, it is possible to consider at the present time the described semiologic alteration as a form of pseudoathetosis localized in the hand.