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Yıl:2003; Cilt: 40; Sayı: 1-2>> Özet
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Nöropsikiyatri Arşivi; 2003;40(1-2):26-35
Akut transkortikalsensoriyel afazide lisan özellikleri ve lezyon lokalizasyonu
DE Akkuş, A Kısabay, A Dirlik
Ege Üniversitesi Tıp Fakültesi, Nöroloji Anabilim Dalı, İzmir
Amaç: Bu çalışmanın amacı, akut transkortikal sensoriyel afazide lisan özelliklerini ve sorumlu lezyon lokalizasyonlarını belirlemek, ayrıca olası fizyopatolojik mekanizmaları tartışmaktır.

Yöntem: 1991-2002 yıllarında kliniğimizin nöropsikoloji laboratuvarında incelenen hastalar arasında, akut transkortikal sensoriyel afazisi bulunan 12 olgu belirlenmiştir. Lisan bozukluğu Gülhane Afazi Testi kullanılarak değerlendirilmiştir. Tüm olgularda lezyonlar bilgisayarlı tomografi ve/veya manyetik rezonans incelemeleriyle saptanmış; 37 anatomik beyin bölgesine göre lokalize edilmiştir. İki olguda serebral perfüzyon incelemesi gerçekleştirilmiştir.

Sonuçlar: Akut transkortikal sensoriyel afazisi bulunan 10'u erkek, 2'si kadın olmak üzere, toplam 12 olgu saptanmıştır. Olguların yarısında ekolali bulunmaktadır ve çoğu olguda semantik parafaziler ve neolojizmler söz konusudur. Semantik jargon, perseverasyonlar ve sözcük bulma güçlükleri diğer özelliklerdir. On hastada tek bir infarkt bulunmaktayken, diğer iki olguda ikili infarktlar vardır. Bir olguda serebral perfüzyon incelemesiyle peri-Silviyan lisan alanında fonksiyonel izolasyon bulgusu gösterilmiştir. Orta temporal girus, korona radiata ve angüler girus başlıca serebral tutuluş bölgeleridir.

Tartışma: Akut transkortikal sensoriyel afazide, lisan bozukluğuna ait bazı değişkenlikler görülebilir. Sorumlu lezyonlar oldukça dağınıktır. Fizyopatolojik olarak fonksiyonel izolasyon mekanizması, bazı olgularda afaziyi açıklayıcı olabilir. Lisan anlama ve semantik fonksiyonlar, beyinde oldukça yaygın bir yerleşime sahip görünmektedir.

[language] Characteristics and Lesion Localization in Acute Transcortical Sensory Aphasia
Objective: The aim of this study was to determine the [language] features and lesion localizations of acute transcortical sensory aphasia, and to discuss the possible physiopathological mechanisms.

Method: Twelve cases with acute transcortical sensory aphasia were identified among patients evaluated in our neuropsychology laboratory between 1991-2002. The [language] disturbance was assessed by Gülhane Aphasia Battery. In all cases, the lesions were established with cerebral computed tomography and/or magnetic resonance imaging, and localized according to 37 different anatomical brain regions. Cerebral perfusion studies were performed in two cases.

Results: There were 10 men and 2 women with acute transcortical sensory aphasia. Half the cases had echolalia, and most of the cases had semantic paraphasias and neologisms. Semantic jargon, perseverations and word-finding difficulties were the other features. Ten patients had a single infarction whereas the others had double infarctions. Functional isolation of the peri-Sylvian [language] area was demonstrated in one case with cerebral perfusion study. Middle temporal gyrus, corona radiata and angular gyrus were the principal involvement sites.

Discussion: Some variations of [language] disturbance may be seen in acute transcortical sensory aphasia. The responsible lesions are rather distributed. Physiopathologically, functional isolation mechanism may be an explanation for aphasia in some cases. It seems that [language] comprehension and semantic functions have quite a widespread cerebral localization.

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