In Japan, preventive measures and antiviral therapy against acute or chronic viral infection had achieved remarkable progress in the 1980s or later. On the contrary, metabolic syndrome complicated with fatty liver has emerged as a public health concern to date.
In the current study, we attempted to clarify etiological changes in liver cirrhosis treated in a single tertiary institute in Sapporo, Japan, from 1998 to 2016.
Medical records of 1,166 patients (787 males, with mean of 64.9 ± 11.7 years), diagnosed as having liver cirrhosis for 19 years, were retrospectively reviewed to analyze etiology and clinical features.
During the past 10 years, annual numbers of cirrhotic patients with chronic infection of hepatitis B virus (HBV) or hepatitis C virus (HCV) decreased from 50 or more to 20 or less, and alcoholic liver disease or cryptogenic liver injury emerged as major cause of liver cirrhosis. Among 100 cirrhotic patients of unknown cause, nonalcoholic fatty liver disease (NAFLD) occupied almost 50% in 19 observational years.
In order to control the rising trend in NAFLD related with metabolic syndrome, preventive measures including education in society would be required in Japan.
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