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日本呼吸器学会英文誌 Respiratory Investigation
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Abstract

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Article in Japanese

Case Report

A case of a reversible splenial lesion associated with pneumonia caused by Legionella pneumophila serogroup 2

Takashi Nishida  Takashi Ishiguro  Eriko Kawate  Chie Oota  Naho Kagiyama  Noboru Takayanagi 

Department of Respiratory Medicine, Saitama Cardiovascular and Respiratory Center

ABSTRACT

A 55-year-old man was admitted to a local hospital due to fever, diarrhea, and gait disturbance. He was diagnosed with pneumonia and treated with antibiotics. The following day he developed neurological symptoms, including unconsciousness, and was transferred to our hospital. Hyponatremia, rhabdomyolysis, liver dysfunction, and neurological symptoms were observed, so we suspected pneumonia caused by Legionella pneumophila and administered fluoroquinolone and macrolide. Brain magnetic resonance imaging (MRI) (diffusion-weighted imaging) revealed a high-intensity region in the splenium of the corpus callosum. Alongside an improvement in pneumonia symptoms, his neurological symptoms and MRI abnormalities normalized. Legionella pneumophila serogroup 2 was cultured from bronchoalveolar lavage fluid, and he was diagnosed with a reversible splenial lesion associated with pneumonia caused by Legionella pneumophila.

KEYWORDS

Legionella pneumonia  Legionella pneumophila serogroup 2  Reversible splenial lesion  Clinically mild encephalitis/encephalopathy with a reversible splenial lesion(MERS) 

Received 7 Jul 2017 / Accepted 23 Aug 2017

AJRS, 6(6): 417-420, 2017

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