title: [Case-control studies of hepatocellular carcinoma and liver cirrhosis in relation to life style and other risk factors].
abstract: Case-control studies were initiated to investigate possible risk factors (life style, etc.) for hepatocellular carcinoma (HCC) and liver cirrhosis (LC). One hundred and fifty-four patients with HCC and 97 patients with LC who had no evidence of HCC were compared with frequency-matched 298 control subjects. Chronic hepatitis B virus infection and histories of blood transfusion and familial liver diseases were highly and significantly associated with both HCC and LC. Heavy drinkers in their younger years showed about 2 to 3 times risk increase for HCC or LC as compared with non-drinkers. Smoking was suspected as a risk factor, but a dose-response relationship was not clear, and further investigations are needed. To study the factors in the development of HCC from LC, 120 HCC patients with LC were compared with LC patients. No significant factors were observed. Ex-drinkers among LC patients experienced a slightly decreased risk for HCC in contrast to some belief that ex-drinkers with LC have higher risk for HCC.
authors.affiliation: Dept. of Public Health, Kyushu Univ. School of Med.
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: T
authors.initials: T
authors.lastname: Hirohata
authors.forename: S
authors.initials: S
authors.lastname: Takeshita
mesh_terms: D000328:Adult; D000368:Aged; D000428:Alcohol Drinking; D001803:Blood Transfusion; D006528:Carcinoma, Hepatocellular / Q000453:epidemiology*; D016022:Case-Control Studies; D005260:Female; D006509:Hepatitis B / Q000150:complications; D006801:Humans; D008019:Life Style; D008103:Liver Cirrhosis / Q000453:epidemiology*; D008113:Liver Neoplasms / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects