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[Histological characteristics of chronic hepatitis C in biopsy material]
K Jármay1, G Karácsony, Z Ozsvár
1I. Belgyógyászati Klinika, Szent-Györgyi Albert Orvostudományi Egyetem, Szeged.
Insights
Hepatitis C virus (HCV) infection often leads to significant liver damage. This study found that steatosis, lymphoid changes, and bile duct lesions correlate with chronic hepatitis C activity, aiding diagnosis.
Area of Science:
- Hepatology
- Virology
- Pathology
Context:
- Hepatitis C virus (HCV) infection is a significant global health concern with a high rate of chronicity, potentially leading to severe liver conditions like cirrhosis and hepatocellular carcinoma.
- Hepatic histology provides characteristic, though not definitive, insights into HCV infection.
- Liver biopsy remains a crucial diagnostic tool for assessing the extent of liver damage in chronic hepatitis C.
Purpose:
- To evaluate the characteristic histological findings in liver biopsies of patients with Hepatitis C virus (HCV) infection.
- To correlate these histological features with epidemiological data within the study cohort.
- To assess the prevalence and severity of histological changes, including inflammation and fibrosis, in relation to HCV infection activity.
Summary:
- A study of 106 liver biopsies from HCV-positive patients revealed that over half presented with mild chronic hepatitis (HAI: 4-8) and stage 1 fibrosis (41.5%).
- Histological findings showed a high frequency of steatosis (70.75%) and lymphoid portal/periportal inflammation (F/A) (63.2%), with increased prevalence alongside hepatitis activity.
- Moderate chronic hepatitis (HAI: 9-12) and advanced fibrosis (stage 3: 34.9%, stage 4/cirrhosis: 10.37%) were also observed, with steatosis, lymphoid F/A, and bile duct lesions showing significant correlation with hepatitis activity (p < 0.001).
Impact:
- Identifies key histological features such as steatosis, lymphoid F/A, and bile duct damage as important diagnostic markers strongly correlated with chronic hepatitis C activity.
- Highlights the need for careful histological assessment, particularly in cases of mild chronic hepatitis, to detect significant fibrotic changes.
- Provides valuable data for understanding the spectrum of liver damage in HCV infection and guiding clinical management decisions based on biopsy findings.
Background/Aims:
Hepatitis C virus (HCV) infection is one of the most important diseases with high chronicity rate (50-80%) leading to end-stag cirrhosis and hepatocellular carcinoma. Hepatic histology shows a characteristic but not diagnostic picture. The aim of this study was to evaluate the characteristic histological findings in correlation with epidemiological features in our liver biopsy material.
Patients/Methods:
106 liver biopsies were studid between 1993-1996. All patients (60 males, 46 females, age between 11-81 years, mean age: 43 years) were found to be positive for HCV antibody by a second-generation ELISA method. The biopsy materials were fixed in buffered formalin and having embedded in paraffin, stained with hematoxylin and eosin, periodic acid-Schiff after diastase digestion, Gömöri's reticulin stain and picrosirius red for collagen. The histological evaluation was based upon the new classification of chronic hepatitis proposed by Desmet et al. The statistical analysis was performed by the Chi square test.
Results:
Minimal chronic hepatitis (HAI: 1-3) was found in 14 (13.2%), mild chronic hepatitis (HAI: 4-8) in 69 (65.09%) and moderate chronic hepatitis (HAI: 9-12) in 23 (21.69%) cases, while assessment of fibrosis (staging) resulted fibrosis 0/1 in 44 (41.5%), fibrosis 2 in 14 (13.2%), fibrosis 3 in 37 (34.9%) and cirrhosis (fibrosis 4) in 11 (10.37%) cases. Among histological features of chronic hepatitis C, the frequency of steatosis (70.75%), lymphoid F/A (63.2%), and bile duct lesions (12.26%) have paralelly increased with activity (grade) of hepatitis and these changes were more pronounced in moderate chronic hepatitis (p < 0.001).
Conclusions:
More than half of chronic hepatitis C patients presented mild histological lesions with stage 1 fibrosis. Lymphoid F/A, bile duct damage and steatosis are important diagnostic features that show a strong correlation with the activity of chronic hepatitis. The assessment of fibrosis (stage: 3 and stage: 4) in mild chronic hepatitis cases does alert the hepatologist to perform the liver biopsy to detect the fibrotic changes in chronic hepatitis C.