RESUMEN
We performed a clinico-pathological study of 163 untreated cases of chronic hepatitis C. Eighty five percent of the patients were clinically asymptomatic and their physical examinations showed unremarkable or minimal changes at the time of the liver biopsy. Liver function tests tended to present slight abnormalities, involving mild elevations of the activity of the aminotransferases and gamma-glutamil transferase levels. In spite of these mild abnormalities, advanced chronic liver disease was histologically detected in eighty nine percent of the patients, mainly showing chronic active hepatitis. The most characteristic histological finding was an interlobular bile duct damage, which correlated with the presence of lymphoid aggregates in the portal tracts and with the development of fibrosis.