Sak, IKizilirmak, DHavlucu, YYilmaz, ZÇelik, P2025-04-102025-04-100494-1373http://hdl.handle.net/20.500.14701/37954Ataxia-telangiectasia is an autosomal recessive, rare, neurodegenerative multisystem disorder characterized by ataxia-telangiectasia, cerebellar ataxia, oculocutaneous telangiectasia, immunodeficiency, progressive respiratory failure associated with increased malignancy risk. Clinical diagnosis is made with ataxia-telangiectasia mutated (ATM) gene. Our case, who was diagnosed as ataxia-telangiectasia while investigating the etiology of chylous pleural effusion, is presented because of its rare occurrence.EnglishArticle