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In 1825, Bouchet and Cazauvieilh described palpable firmness and atrophy of the uncus and medial temporal lobe of brains from epileptic and non-epileptic individuals. [4]: 565 In 1880, Wilhelm Sommer investigated 90 brains and described the classical Ammon's horn sclerosis pattern, severe neuronal cell loss in hippocampal subfield cornum Ammonis 1 (CA1) and some neuronal cell loss in ...
Nearly all reports of seizure outcome following these procedures indicate that the best outcome group includes patients with MRI evidence of mesial temporal sclerosis (hippocampal atrophy with increased T-2 signal). The range of seizure-free outcomes for these patients is reported to be between 80% and 90%, which is typically reported as a sub ...
He was the first to recognize and prove that mesial temporal sclerosis, a common cause for difficult epilepsy, can be identified with MRI. [ 1 ] In the area of brain malformations, he is the co-author of the widely recognized classification scheme. [ 2 ]
During a temporal lobe seizure, a person may experience a seizure aura; an aura is an autonomic, cognitive, emotional or sensory experience that commonly occurs during the beginning part of a seizure. [10] [2] The common mesial temporal lobe seizure auras include a rising epigastric feeling, abdominal discomfort, taste (gustatory), smell ...
Hippocampal sclerosis specific to the mesial temporal lobe, is the most common type of such tissue damage. [ 133 ] [ 134 ] It is not yet clear, however, whether the epilepsy is usually caused by hippocampal abnormalities or whether the hippocampus is damaged by cumulative effects of seizures. [ 135 ]
This is a shortened version of the sixth chapter of the ICD-9: Diseases of the Nervous System and Sense Organs. It covers ICD codes 320 to 389. The full chapter can be found on pages 215 to 258 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1.
Structural MRI scans often reveal frontal lobe and/or anterior temporal lobe atrophy, but in early cases the scan may seem normal. Atrophy can be either bilateral or asymmetric. [ 13 ] Registration of images at different points of time (e.g., one year apart) can show evidence of atrophy that otherwise at individual time points may be reported ...
Focal seizures (also called partial seizures [1] and localized seizures) are seizures that affect initially only one hemisphere of the brain. [2] [3] The brain is divided into two hemispheres, each consisting of four lobes – the frontal, temporal, parietal and occipital lobes. A focal seizure is generated in and affects just one part of the ...