Acute Aphasia Due to Percheron Artery Occlusion

Öz

Thalamus contains strategic nuclei that integrates vital cortical functions, and vascular insults to thalamus results in distinct clinical syndromes. One of these is paramedian territory infarctions that clasically characterized with decreased level of consciousness, vertical gaze paralysis and amnesia. Paramedian territory is supplied by thaamoperforating arteries that originate from posterior cerebral arteries. Thalamoperforating arteries that have great variability with respect to number, size and territorial contribution, occasionally originates from one posterior cerebral artery as a common trunk and supplies paramedian territory bilaterally. This anatomic variant is called Percheron artery, and occlusion of this artery results in bilateral paramedian thalamic infarction. In this article a Percheron artery occlusion case presenting with acute aphasia is presented.

Anahtar Kelimeler

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Percheron Arter Oklüzyonuna Bağlı Akut Afazi

Öz

Talamus önemli kortikal işlevleri bütünleştiren stratejik nükleuslara sahiptir ve vasküler etkilenmeleri farklı klinik sendromlara neden olur. Bunlardan birisi bilinç kaybı, vertikal bakış paralizileri ve amnezi ile karakterli paramedian bölge infarktlarıdır. Paramedian bölge posterior serebral arterden çıkan talamoperforan arterlerce beslenir. Sayı, genişlik ve besledikleri alan açısından farklılıklar gösteren talamoperforan arterler bazan bir taraftaki posterior serebral arterden tek bir kökle çıkar ve iki taraf paramedian bölgeyi besler. Bu anatomik varyant Percheron arteri olarak isimlendirilir ve bu arterin tıkanıklığı bilateral paramedian talamik infarkta neden olur. Bu makalede afazi ile başlangıç gösteren bir Percheron arter tıkanıklığı olgusu sunulmuştur.

Anahtar Kelimeler

• Talamus, İnfarkt, Percheron arteri

Kaynakça

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