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[Mesial temporal sclerosis (II): clinical features and complementary studies]

P J Serrano-Castro1, J C Sánchez-Alvarez, T García-Gómez

  • 1Servicio de Neurología, Hospital Torrecárdenas, Amería, España.

Revista De Neurologia
|October 31, 1998
PubMed
Summary
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Mesial temporal sclerosis (MTS) is a distinct clinical syndrome. Non-invasive diagnostic tests are sufficient for preoperative evaluation, negating the need for invasive procedures.

Area of Science:

  • Neurology
  • Clinical Diagnostics
  • Neuroimaging

Context:

  • Mesial temporal sclerosis (MTS) is characterized by recurrent, pharmacologically resistant temporal lobe seizures and associated neuropsychological deficits.
  • Diagnosis lacks pathognomonic clinical data but often includes childhood seizure onset, specific aura types (visceral, olfactory, uncinate), and characteristic ictal behaviors.

Purpose:

  • To delineate the clinical data and diagnostic characteristics of mesial temporal sclerosis (MTS).
  • To evaluate the utility of non-invasive diagnostic modalities in the preoperative assessment of MTS.

Summary:

  • Clinical features include early-onset seizures, specific auras, and semiological patterns. Surface EEG may show anterior temporal abnormalities.
  • Neuroimaging reveals characteristic findings: hippocampal hyperdensity on T2-weighted MRI and/or hippocampal atrophy. FDG-PET and SPECT-HMPAO show temporal hyperperfusion patterns.

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Impact:

  • Mesial temporal sclerosis (MTS) is recognized as a clinically and diagnostically distinct syndrome.
  • Current non-invasive diagnostic tests are adequate, rendering invasive procedures unnecessary for preoperative guidelines in MTS patients.