Bilateral caudate nucleus infarction associated with variant in circle of Willis

A 76-year-old woman presented with syncope. The next day she had disorientation, confabulations, slight dyspraxia of the left hand and bilateral Babinski signs. A fluid attenuated inversion recovery MR scan showed high signal intensity of the head of the caudate nuclei, the anterior part of the corpus callosum and the fornices, consistent with bilateral...