[Multiple pathogenic factors analysis on primary liver cancer the role of HBV infection combined with other risk factors in the occurrence of PLC].

To assess the roles of some suspected etiological factors in the pathogenic course of primary liver cancer (PLC), a casecontrol and seroepidemiologic study was conducted in 102 cases of PLC patients and two control groups. The result provides further data to support the hypothesis that PLC is closely associated with HBV infection. The study also shows that psychic trauma and habitual drinking may be regarded as the risk factors for PLC. Moreover, it is noticeable that a significant synergic effect is observed when some factors work together. This probably indicates that many other factors also play an important part in the pathogenic course of PLC.