Multiple Choice Questions

Question 7. A 32-year-old man who has sex with men is screened in the genito-urinary medicine clinic. He is found to be chronically infected with hepatitis B virus (HBsAg +ve, anti-HBc +ve, IgM anti-HBc -ve, anti-HBs -ve). The high incidence of hepatitis B infection in Africa and parts of Asia is thought to be causally associated with increased incidence of which malignancy?