The Japanese journal of neuropsychology

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ArticleTitle	Mixed transcortical aphasia due to a large lesion in the whole left hemisphere
Language	J
AuthorList	Masayo Urano¹⁾, Sachiko Anamizu²⁾, Masaru Mimura³⁾
Affiliation	¹⁾Department of Rehabilitation Medicine, Yokohama Stroke and Brain Center ²⁾Department of Neuropsychiatry, Keio University School of Medicine ³⁾Department of Neuropsychiatry, Showa University School of Medicine
Publication	Japanese Journal of Neuropsychology: 26 (3), 204-209, 2010
Received	Dec 22, 2008
Accepted	Jul 6, 2009
Abstract	We reported a 61 year-old right-handed man who presented with mixed transcortical aphasia following cardiogenic cerebral embolism in the whole left hemisphere. His spontaneous speech was extremely limited with frequent echolalic responses. Auditory comprehension, object naming, reading and writing were also severely impaired. In contrast, he was able to repeat meaningful words and sentences, as well as meaningless nonwords up to 4 morae. Brain MRI demonstrated a large lesion in the whole left middle cerebral artery territory, which also extended to the left anterior and posterior cerebral artery areas. Accordingly, his well-preserved repetitive ability could not be explained by the Geschwind's account (1968) of anatomic isolation of anterior and posterior language areas. Rather, we suggest that the intact right hemisphere may subserve his residual repetitive abilities.
Keywords	mixed transcortical aphasia, echolalia, repetition ability, right hemisphere