Publicación Oficial de la Sociedad Ecuatoriana de Neurología, de la Liga Ecuatoriana Contra la Epilepsia y de la Sociedad Iberoamericana de Enfermedad Cerebrovascular
 

Artículo original

External capsule infarct related to occlusion of the middle cerebral artery. Infarto en la cápsula externa relacionado con oclusión de la arteria cerebral media.

Autor: Oscar H. Del Brutto, Emilio E. Arias, Denisse A. Rumbea

Rev. Ecuat. Neurol. VOL 33 Nº1, 2024
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    Summary

    The external capsule is a band of longitudinal fibers (white matter) limited by two deep gray matter structures, the putamen medially and the claustrum laterally (Figure 1).

    This structure is mainly composed of axons that connect different areas of the cerebral cortex with the tegmentum (corticotegmental fibers).

    Ischemic strokes confined to the external capsule are extremely rare, representing 0.3% of patients enrolled in a large hospital-based ischemic stroke registry.

    External capsule infarcts may be related to different pathogenic mechanisms, including large artery disease, cardiogenic brain embolism, sporadic cerebral small vessel disease, or to a combination of them.

    In addition, external capsule infarcts have been typically reported in a hereditary form of cerebral small vessel disease known as CADASIL (cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy).


     
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