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Bilateral damage to paramedian thalamus and upper midbrain has been well documented in connection with anatomic characteristics of the thalamic arterial supply, but other subtypes of bilateral infarct of thalamus have never been studied. To determine the clinical, etiologic, and MRI correlates of bilateral infarcts in various thalamic territories, these authors studied 16 consecutive patients admitted to their stroke center over a 7-year period.
Eight patients had bilateral infarcts in the territory of the paramedian artery, and the remaining 8 had bilateral thalamogeniculate infarction -- either isolated or in association with polar or paramedian involvement. In half of the 16 patients, these patterns were associated with a suggestive clini…