(A case) A 68-year male with maintenance dialysis presented appetite loss and general fatigue. Ultrasonography revealed a 10cm sized tumor at the segment S7 in the liver, suggesting HCC. Retention of ascites was evident. Serum HBs-antigen and serum HCV-antibody regularly checked showed negative results. However, three months prior, serum HBs-antigen was positive. This time when HCC was discovered, serum HBs-antigen was found to be negative. Further laboratory analysis revealed positive results of serum HBs-antibody, HBc-antibody, HBe-antibody, and negative results of serum HBe-antigen and IgM HBc-antibody. HBV-DNA was not detected. Tumor markers, AFP and PIVKA-II, were remarkably elevated. In this patient, he has no history of vaccination. He has never been investigated for serum HBc-antibody and HBs-antibody.  

I suppose that HCC in this patient originates in occult HBV and the necessity in estimating serum HBc-antibody and HBs-antibody even if serum HBs-antigen is negative.

Do you agree to my idea that HCC in this patient derived from occult HCC?

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