Thalamic Aphasia Syndrome Teaching NeuroImages by Umair Afzal and Muhammad U. Farooq © 2013 American Academy of Neurology.

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Thalamic Aphasia Syndrome Teaching NeuroImages by Umair Afzal and Muhammad U. Farooq © 2013 American Academy of Neurology

- An 83-year-old right-handed woman presented with sudden right sided hemiparesis, somnolence and loss of normal speech. - Speech was non-fluent with semantic paraphasias and word-finding difficulties. Word repetition and comprehension was normal. Afzal et al. Vignette

Afzal et al. Figure 1 Figure 2

Afzal et al. -MR brain showed an area of restricted diffusion in the left thalamus consistent with acute infarction. -Speech fluency returned to normal after two days with occasional dysnomia and parapahsias. -Left thalamic infarcts can result in aphasia which is characterized by lexical- semantic deficits and intact word repetition; fluency and comprehension are variably affected (1). - Thalamic aphasia has been hypothesized to result from disconnection between cortical language centers and thalamic nuclei (1,2). Teaching NeuroImages: Thalamic Aphasia Syndrome