Dergi Ara >>
Yıl:2001; Cilt: 1; Sayı: 4>> Özet
Demans Dergisi; 2001;1(4):130-136
Lewy Cisimcik Demansı-Histopatolojik Özellikleri
N Akyürek, L Memiş
Gazi Üniversitesi Tıp Fakültesi Patoloji ABD, Ankara
Lewy cisimcik demansı (LCD), Alzheimer
hastalığından sonra ikinci en sık demans
nedeni olup, çoğu serilerde tüm demans olgularının
yüzde 15-25'ini oluşturmaktadır. Bu nörodejeneratif hastalık beyinde yaygın
intrasitoplazmik, yuvarlak eozinofilik nöronal
inklüzyonlar olan Lewy cisimciklerinin (LC) varlığı
ile karakterizedir. Literatürde diffüz LC hastalığı,
kortikal LC hastalığı, Lewy tipi senil demans ve
Alzheimer hastalığının LC varyantı şeklinde çeşitli
terimler bulunmakla birlikte günümüzde
Uluslararası Lewy Cisimcik Demansı Çalışma
Grubu tarafından önerilen Lewy cisimcik demansı
terimi kullanılmaktadır. LCD'nin en önemli özelliği progressif demansdır.
Klinik olarak bu durum ilk önce Alzheimer hastalığı
ya da vasküler demans olarak tanı alabilir.
Alternatif olarak bazı hastalar klasik Parkinson
hastalığı şeklinde başlar ve daha sonra demans
gelişir. Hastaların küçük bir bölümünde aynı anda
demans ve parkinsonizm bulunur.
Hastaların çoğu ilk olarak yakın hafızanın zayıflamasından
yakınmaktadır. Bazı hastalarda ise
hafıza korunmuş olmakla birlikte esas problem
davranış bozukluklarıdır. Konuşmanın duraklaması,
sözcük bulmada problemler, visüel yetilere
özgü alanlarda güçlükler gibi özellikler hastalıkda
erkenden oluşabilir. Hastalığın erken dönemlerinde
dikkatsizlik, kavrama yeteneğinde kayıp ile
birlikte kararsızlık gelişebilir ve bir Alzheimer dışı
demans ihtimalini düşündürür.

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