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Prevalence and characteristics of familial hepatocellular carcinoma caused by chronic hepatitis B infection in Hong Kong.
Alimentary Pharmacology & Therapeutics 2004 Februrary 16
BACKGROUND: Hepatitis B virus infection is an important aetiological factor for hepatocellular carcinoma. Clusters of hepatocellular carcinoma have been observed in families infected with hepatitis B virus.
AIM: To investigate the prevalence and characteristics of hepatocellular carcinoma associated with familial hepatitis B virus in Hong Kong.
METHODS: Hepatitis B virus patients were screened for familial hepatocellular carcinoma using a standardized questionnaire. The clinical features of patients with familial hepatocellular carcinoma were compared with those of 118 patients with sporadic hepatocellular carcinoma attending the clinic during the same period.
RESULTS: A total of 5080 patients were interviewed. Validation of the questionnaire indicated that the reliability was high. There were 22 families with familial hepatocellular carcinoma, giving a prevalence of 4.3 families/1000 hepatitis B virus carriers. The mean age of onset was 48.5 +/- 13 years in familial hepatocellular carcinoma and 62 +/- 11 years in sporadic hepatocellular carcinoma (P = 0.005). The ages of onset were 59 +/- 11, 40 +/- 10 and 18 +/- 4 years in the first, second and third generations, respectively (P < 0.0001), suggesting an anticipation phenomenon. Familial hepatocellular carcinoma patients were more likely to present with pain (70% vs. 10%, P < 0.0001), but not on routine screening (14% vs. 52%, P < 0.0001), than sporadic hepatocellular carcinoma patients.
CONCLUSION: The prevalence of familial hepatocellular carcinoma is significant in Hong Kong. These patients show specific clinical features when compared with patients with sporadic hepatocellular carcinoma.
AIM: To investigate the prevalence and characteristics of hepatocellular carcinoma associated with familial hepatitis B virus in Hong Kong.
METHODS: Hepatitis B virus patients were screened for familial hepatocellular carcinoma using a standardized questionnaire. The clinical features of patients with familial hepatocellular carcinoma were compared with those of 118 patients with sporadic hepatocellular carcinoma attending the clinic during the same period.
RESULTS: A total of 5080 patients were interviewed. Validation of the questionnaire indicated that the reliability was high. There were 22 families with familial hepatocellular carcinoma, giving a prevalence of 4.3 families/1000 hepatitis B virus carriers. The mean age of onset was 48.5 +/- 13 years in familial hepatocellular carcinoma and 62 +/- 11 years in sporadic hepatocellular carcinoma (P = 0.005). The ages of onset were 59 +/- 11, 40 +/- 10 and 18 +/- 4 years in the first, second and third generations, respectively (P < 0.0001), suggesting an anticipation phenomenon. Familial hepatocellular carcinoma patients were more likely to present with pain (70% vs. 10%, P < 0.0001), but not on routine screening (14% vs. 52%, P < 0.0001), than sporadic hepatocellular carcinoma patients.
CONCLUSION: The prevalence of familial hepatocellular carcinoma is significant in Hong Kong. These patients show specific clinical features when compared with patients with sporadic hepatocellular carcinoma.
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