臨牀消化器内科 Vol.27 No.5(3-2)


特集名 非B非C型肝癌―最新の知見
題名 わが国における非B非C型肝癌の実態 (2) アルコール性肝障害における肝癌発生
発刊年月 2012年 05月
著者 堀江 義則 国際医療福祉大学山王病院消化器内科/慶應義塾大学医学部消化器内科
著者 山岸 由幸 慶應義塾大学医学部消化器内科
著者 海老沼 浩利 慶應義塾大学医学部消化器内科
著者 日比 紀文 慶應義塾大学医学部消化器内科
【 要旨 】 わが国の肝細胞癌(HCC)の成因は,B型14.1%,C型66.3%,B+C型3.7%に対し,アルコール性肝障害(ALD)を基盤としたHCC(ALD-HCC)が7.2%である.ALD-HCCは,他の非B非C-HCCと比べて発癌年齢が若く,女性の頻度が低く,肝硬変合併頻度が高い.また,アルコール性肝硬変にHCCを合併する危険因子としては,高齢,性別(男性),糖尿病と肥満の合併が挙げられる.原因不明のHCCのうち20〜60 g/日の飲酒群では,ALD-HCCに類似した背景因子を認め,とくに糖尿病や肥満の合併がある場合,この程度の飲酒でも発癌に寄与している可能性もある.高齢並びに肥満,糖尿病を合併した習慣飲酒者はHCCのハイリスク群であり,ALD-HCCでは腫瘍マーカー陰性例も多いため,定期的な画像での検査が重要である.
Theme Non-B, Non-C Hepatocellular Carcinoma : The Latest Findings
Title Hepatocellular Carcinoma in Alcoholic Liver Disease
Author Yoshinori Horie Department of Internal Medicine, International University of Health and Welfare, Sanno Hospital / Division of Gastroenterology & Hepatology, Department of Internal Medicine, School of Medicine, Keio University
Author Yoshiyuki Yamagishi Division of Gastroenterology & Hepatology, Department of Internal Medicine, School of Medicine, Keio University
Author Hirotoshi Ebinuma Division of Gastroenterology & Hepatology, Department of Internal Medicine, School of Medicine, Keio University
Author Toshifumi Hibi Division of Gastroenterology & Hepatology, Department of Internal Medicine, School of Medicine, Keio University
[ Summary ] In a nationwide survey concerning hepatocellular carcinoma (HCC), alcoholic liver disease (ALD) related-HCC accounted for 7.2 % of all HCC cases, followed by a group with unknown causes of HCC (5.1 %). In HCC without viral hepatitis, the age was lower in the ALD-HCC group. Male gender and the prevalence of LC were higher in the ALD-HCC group. The modest alcohol intake (20-60 g/day) subgroup in unknown HCC cases exhibited the same trends regarding age, gender, body mass index, prevalence of diabetes mellitus (DM), obesity, and liver function as the ALD-HCC group.
Regarding HCC in relation to alcoholic liver cirrhosis (ALC), the prevalence of HCC was 32.3 % in males, and 19.8 % in females. In ALC patients with DM or obesity, or in elderly patients, the prevalence of HCC was higher. Age, obesity and DM appeared to be involved in the progression of HCC in ALC. Imaging procedures are required regularly, especially for elderly habitual drinkers and habitual drinkers with DM or who are obese.
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