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Original Article
Volume 328:1797-1801 June 24, 1993 Number 25
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Risk Factors for Hepatocellular Carcinoma among Patients with Chronic Liver Disease
Hideaki Tsukuma, Tomohiko Hiyama, Sachiko Tanaka, Miho Nakao, Takako Yabuuchi, Tsugio Kitamura, Katsumi Nakanishi, Isaburo Fujimoto, Atsuo Inoue, Hideo Yamazaki, and Teruaki Kawashima

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ABSTRACT

Background and Methods To detect potentially curable cases of hepatocellular carcinoma, outpatients with chronic hepatitis or compensated liver cirrhosis who were seen at the Center for Adult Diseases (Osaka, Japan) were examined periodically by means of ultrasonography and measurement of serum alpha-fetoprotein. Risk factors for hepatocellular carcinoma were identified with a Cox proportional-hazards model.

Results A total of 917 patients, 40 to 69 years old, were registered from May 1987 to March 1991. By the end of September 1991, liver cancer had developed in 54. The three-year cumulative risk of liver cancer was 12.5 percent for 240 patients with liver cirrhosis at enrollment and 3.8 percent for 677 patients with chronic hepatitis. Cox regression analysis showed that the risk of liver cancer was increased almost sevenfold in patients with hepatitis B surface antigen (rate ratio, 6.92; 95 percent confidence interval, 2.92 to 16.39) and fourfold in patients with hepatitis C antibody (rate ratio, 4.09; 95 percent confidence interval, 1.30 to 12.85). A high alpha-fetoprotein value at enrollment was also a risk marker for liver cancer.

Conclusions Patients with hepatitis C virus infection have a greatly increased risk of liver cancer. Further studies are required to clarify the roles of other risk factors, including drinking and smoking habits.


Source Information

From the Department of Field Research (H.T., I.F.), Research Institute (T.H.), and Hospital (S.T., M.N., T.Y., T. Kitamura, K.N., A.I.), Center for Adult Diseases, and the Center for Cancer Detection and Prevention (H.Y., T. Kawashima), Osaka, Japan.

Address reprint requests to Dr. Tsukuma at the Department of Field Research, Center for Adult Diseases, Osaka, 3-3 Nakamichi 1-chome, Higashinari-ku, Osaka 537, Japan.

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Related Letters:

Risk Factors for Hepatocellular Carcinoma in Patients with Chronic Liver Diseases
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