臨牀消化器内科 Vol.34 No.4(3-3)


特集名 肥満と消化器
題名 肥満と消化器疾患 (3) 肥満と肝疾患
発刊年月 2019年 04月
著者 戸張 真紀 東京女子医科大学八千代医療センター消化器内科
著者 橋本 悦子 西武鉄道健康支援センター
【 要旨 】 肥満を基盤として発症する肝疾患はNAFLDである.NAFLDの有病率は世界の851万人を対象としたメタアナリシスで約25%である.NAFLDは非進行性の病態と考えられているNAFLと肝組織でsteatohepatitisを示し肝硬変・肝細胞癌に進行しうるNASHからなり,NASHはNAFLDの約10~20%を占める.NAFLDの予後を規定する因子は線維化の重症度である.NAFLDを背景肝疾患として発症する肝硬変・肝細胞癌は増加傾向にある.NAFLDでは減量で病態が改善しうる.
Theme Obesity and Digestive Organ
Title Obesity and Liver Disease
Author Maki Tobari Department of Internal Medicine and Gastroenterology, Tokyo Women's Medical University Yachiyo Medical Center
Author Etsuko Hashimoto Health Support Center of SEIBU RAILWAY Co., Ltd
[ Summary ] Obesity can lead to nonalcoholic fatty liver disease (NAFLD). The global prevalence of NAFLD was reported to be around 25 % in a meta‒analysis of over 8 million individuals. It has become a huge global health burden. NAFLD consists of two clinical entities: nonalcoholic fatty liver (NAFL), which is mostly benign, and nonalcoholic steatohepatitis (NASH), which is a progressive form, diagnosed based on histology of the steatohepatitis, that may lead to cirrhosis or even hepatocellular carcinoma. NASH accounts for 10 %‒20 % of NAFLD cases. Fibrosis is a key risk factor for prognosis. NAFLD is increasingly emerging as a cause of cirrhosis or hepatocellular carcinoma. Currently, weight reduction is the only promising treatment for NAFLD, but new treatments are being aggressively investigated globally.
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