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vol.15 suppl.1DIFUSIÓN POR RESONANCIA MAGNÉTICA: BASES Y APLICACIONES ONCOLÓGICAS EN ÓRGANOS EXTRACRANEANOSEVALUACIÓN DEL CARTÍLAGO ARTICULAR CON RESONANCIA MAGNÉTICA índice de autoresíndice de materiabúsqueda de artículos
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Revista chilena de radiología

versión On-line ISSN 0717-9308

Resumen

GALVEZ M, Marcelo et al. DISPLASIAS CORTICALES COMO CAUSA DE EPILEPSIA Y SUS REPRESENTACIONES EN LAS IMÁGENES. Rev. chil. radiol. [online]. 2009, vol.15, suppl.1, pp.25-38. ISSN 0717-9308.  http://dx.doi.org/10.4067/S0717-93082009000400005.

Epilepsy is a chronic neurological disorder characterized by spontaneous recurrent seizures, which are clinically classified as generalized or partial. Approximately, 30% of patients with partial epilepsy is refractory to medical treatment. Within the refractory group we must discard the presence of cortical dysplasia as an underlying cause of the crisis. Cortical dysplasias are a type of malformations of cortical development (mcd) that are increasingly recognized as a cause of refractory epilepsy. From the radiological point of view this kind of pathology is of particular interest since imaging manifestations can be subtle or may show completely normal examinations. The aim of this paper is to review the literature, describing the imaging appearance of the normal cortical development, the classifications of cortical malformations, mainly cortical dysplasias, by highlighting the most frequent radiological signs. We also examine the current role of positrón emission tomography (pet) in epilepsy, which in conjunction with magnetic resonance imaging findings and electrophysiological studies are used to define a possible surgical treatment. Through this treatment we expect to be provided with details of histopathological alterations found in the surgical specimen to be compared to the radiographic changes revealed in the pre-surgical study.

Palabras clave : Brain pet; Epilepsy surgery; Focal cortical dysplasia; Magnetic resonante imaging (MRI); Malformation of cortical development (MCD); Mild malformation of cortical development; Refractory epilepsy.

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