Arquivos de neuro-psiquiatria
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To present an anatomical description of the recurrent laryngeal nerve (RLN) on both sides of the larynx as it relates to the possible lesion mechanisms in anterior cervical spine surgery. ⋯ The right RLN was found to be more vulnerable to operational lesions due to two complimentary yet different reasons, trajectory and length. Owing to the fact that a more oblique and unprotected trajectory is not related directly with the tracheoesphageal groove, there is a strong possibility of direct traumas occurring as with the resulting compression from the employ of surgical retractors or an accidental cut, principally in surgeries involving lower vertebral levels. In the same way, the smallest RNL length favors the stretching of fibers during the per-operative traction.
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Ultrasonography for diagnosis of spinal cord diseases has been used since the eighties. There are different fields for its use: traumatic spine lesions, intra-operative use in trauma and spine tumors surgery, pre-operative and follow up study for spinal dysraphism, occult spinal dysraphism of the newborn. Patients with suspected occult spinal dysraphism are the most important indication for the method. ⋯ The exam does not need sedation; it is safe, fast and cheap. Ideally it should be performed by the neurosurgeon as it may provide many information during the examination. The ultrasonography does not replace magnetic resonance imaging but it is an excellent method for screening.
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This study used MRI to define preoperative imaging criteria for cavernous sinus invasion (CSI) by pituitary adenoma (PA). MR images of 103 patients with PA submitted to surgery (48 with CSI) were retrospectively reviewed. The following MR signs were studied and compared to intraoperative findings (the latter were considered the gold standard for CSI detection): presence of normal pituitary gland between the adenoma and CS, status of the CS venous compartments, CS size, CS lateral wall bulging, displacement of the intracavernous internal carotid artery (ICA) by adenoma, grade of parasellar extension (Knosp-Steiner classification) and percentage of intracavernous ICA encased by the tumor. ⋯ The CS was very likely to be invaded if the inferior venous compartment was not detected (PPV. 92,8%), if the lateral intercarotid line was crossed (PPV. 96,1%) or if a bulging lateral dural wall of the CS was seen (PPV, 92,3%). The preoperative diagnosis of CSI by PA is extremely important since endocrinological remission is rarely obtained after microsurgery alone in patients with invasive tumors. The above mentioned MR imaging criteria may be useful in advising most of the patients preoperatively on the potential need for complimentary therapy after surgery.
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Review Case Reports
[Progressive multifocal leukoencephalopathy confirmed by PCR for JC virus in cerebrospinal fluid: case report].
A case of progressive multifocal leukoencephalopathy (PML) is presented, with literature review. PML diagnosis and its differential diagnosis are presented, with emphasis on neuroradiology, cerebrospinal fluid analysis and polymerase chain reaction studies. The prognosis of PML is usually poor, with a median survival of 1-6 months. There is yet no proven effective treatment for this condition; HAART has become the standard of care for these patients.
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Biography Historical Article
[Prince Liev Nikoláievitch Míchkin ("The Idiot", Fiódor Dostoevsky) and the interictal personality syndrome of temporal lobe epilepsy].
Russian romancist Fiódor Dostoevsky's composition, besides its extraordinary literary value, has a special importance for neurologists and epileptologists. The writer, who suffered of epilepsy, transmitted in his texts the epileptic's universe and how the patient is perceived by the society. ⋯ The romance "The Idiot" has as protagonist Prince Liev Nikoláievitch Míchkin, a epileptic with remarkable personality. Considering the propose made by Geschwind-Waxman (1975) of a interictal personality syndrome in temporal lobe epilepsy, this article intends to discuss the behavioral alterations in epileptic patient, from Míchkin, the main character in Fiódor Dostoevsky's "The Idiot".