An 83-year-old man presented with a 1-year history of abducens palsy. Brain MRA revealed arterial dolichoectasia of most cerebral vessels, including the basilar, internal carotid, and middle cerebral arteries. Abducens nerve palsy as a sole manifestation of diffuse intracranial dolichoectasia is unusual but may occur in diffuse intracranial dolichoectasia.
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