external capsule

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external capsule

n.
A thin layer of white substance in the brain that separates the claustrum from the lentiform nucleus.
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1a demonstrates a right frontoparietal, right basal ganglia and left anterior capsula externa hypodense lesions without significant mass effect and no contrast enhancement (Fig.
2), which demonstrated T2 hyperintensity in the right parietal lobe, right basal ganglia and left anterior capsula externa with mild mass effect but no contrast enhancement.