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A lesion in the cavernous sinus producing occlusion of the internal carotid artery and a sixth-nerve palsy may produce a second type of one- and-a-half syndrome.Adduction rather than abduction of one eye is the preserved horizontal eye movement.This combination of eye movement deficits is unlikely to be produced by a lesion in any other location. Mucormycosis,with its propensity to produce vascular occlusion,is a likely,although not specific,cause. |
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