[Diagnosis and histologic surveillance of hepatitis C]

The role of liver biopsy in hepatitis C viral infection is diagnostic and prognostic. It states diagnoses of chronic hepatitis, cirrhosis and hepatocellular carcinoma. The association of portal lymphoid nodules, inflammatory bile duct lesions and steatosis suggests an hepatitis C viral etiology. Liver biopsy allows grading (extent of necro-inflammatory lesions) and staging (amount of fibrosis) of the disease using scoring systems proposed by Knodell et al. and (or) by METAVIR group. It can be helpful in confirming (or refuting) the presence of secondary diagnoses such as alcohol-induce liver disease or haemochromatosis and in assessing the efficacy of antiviral treatments.