This review covers the literature on pediatric hepatology published during 1991. Last year was most important for gaining new insights into active and prophylactic treatment of hepatitis B and the epidemiology of hepatitis. Occurrence of hepatitis C is reported increasingly in children who have had transfusions or in newborns of mothers who are illegal drug abusers. Much information on liver transplantation was published this past year. Because the shortage of organs is a troublesome issue, partial or segmental liver transplantation or even bipartition of the graft are important improvements for the future.