An asymptomatic 28-year-old patient from Ghana with a slightly enlarged liver and chronic elevation of serum liver tests presented recently with the following results:

  • ALT 58 U/L
  • AST 67 U/L
  • Alkaline phosphatase 698 U/L
  • Gamma-glutamyltransferase 845 U/L
  • Bilirubin 1.1 mg/dL

A liver biopsy discloses the lesion shown below.

picture Q39

What is the likely diagnosis?