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原発性進行性失語(PPA)の概念と変遷を前頭側頭葉変性症との関係から整理し,診断に必要な要素的言語症候(文産生障害,発語失行,音韻性錯語,喚語障害,単語の理解障害,復唱障害)を概説した。さらに,PPAの3つの臨床類型(非流暢/失文法型PPA,意味型PPA,語減少型PPA)の症候と病巣を,Gorno-Tempiniらの診断基準(2011)に準拠して述べ,病理所見との関係についても紹介した。
Abstract
I have introduced primary progressive aphasia (PPA) with regard to frontotemporal lobar degeneration (FTLD) and evaluated the following elementary language symptoms for its diagnosis: agrammatism in speech production, apraxia of speech, phonemic paraphasia, naming impairment, impairment of single-word comprehension, and repetition. Furthermore, I have described the clinical symptoms, causative lesions, and pathological findings of three PPA variants —nonfluent/agrammatic, semantic, and logopenic PPA— according to the criteria proposed by Gorno-Tempni et al. (2011).
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