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좌측 전대뇌동맥 영역의 뇌경색 후 발생한 초피질성 혼합 실어증 1예
심미섭,이연수,김은희,이인숙,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.1
We present a case of transcortical mixed aphasia (TMA) presumably caused by left anterior cerebral artery infarction. A 53-year-old, right-handed woman suddenly developed speech disturbance and abnormal behavior. Her spontaneous speech was remarkably reduced to almost mutistic state and objective naming, comprehension, reading and writing were severely impaired. However, repetition of phonemes and sentences were fully preserved. She showed echolalia and completion phenomenon, which prompted us to make a diagnosis of TMA. Although the lesion was confined to extrasylvian area on MRI, SPECT demonstrated diminished blood flow left perisylvian cortices suggestive of functional isolation of speech area. In spite of her echolalic repetition, she couldn't repeat affective prosody, presumably, because of the left anterior corpus callosal lesion. Treatment with bromocriptine, a dopamine agonist helped her recovery of behavioral changes, namely abulia or akinetic mutism consisitent with mesial frontal syndrome.