Is seroconversion in hepatitis -b means free from progression of serosis and hcc ?

i have been treated with adefovir & mild serosis in leverbiopsy.

No. Seroconversion from negative to positive just means that you are now making antibody to hepatitis B virus: you can still have progression of cirrhosis or of hepatocellular carcinoma. Seroreversion from positive to negative just means you stopped making antibody: this means you either have bad nutrition or an exhausted immune system: you can still have progression of cirrhosis or of hepatocellular carcinoma.

Seroconversion is the development of detectable specific antibodies to microorganisms in the serum as a result of infection or immunization. Serology (the testing for antibodies) is used to determine antibody positivity. Prior to seroconversion, the blood tests seronegative for the antibody; after seroconversion, the blood tests seropositive for the antibody.

The word is often used in reference to blood testing for anti-HIV antibodies.

Background
The immune system maintains an "immunological memory" against past pathogens to facilitate early detection and to confer protective immunity against a rechallenge. This explains why many childhood diseases never recur in adulthood (and when they do, it generally indicates immunosuppression).

During a primary immune response, both IgG and IgM immunoglobulins are produced.

After the initial phase of the infection, IgM levels drop (and become undetectable) but IgG levels remain detectable. Upon reinfection, IgM levels rise again. IgG levels can increase slightly, but an elevated IgG titre cannot reveal whether the infection is recent or currently active. Presence of IgM is a sign of current or recent infections. Presence of IgG suggests past infection or immunization.