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Histopathology of chronic hepatitis C in relation to epidemiological factors
J K Delladetsima1, G Rassidakis, N C Tassopoulos
1Department of Pathology, University of Athens School of Medicine, Greece.
Insights
This study on chronic hepatitis C found mild histological lesions in most patients. Age is the sole epidemiological factor influencing hepatitis severity, with lymphoid aggregates and bile duct damage indicating disease activity.
Area of Science:
- Hepatology
- Gastroenterology
- Virology
Background:
- Chronic hepatitis C (CHC) is a significant global health concern.
- Understanding the clinicopathological features of CHC is crucial for patient management.
- Liver biopsy remains a key diagnostic tool for assessing CHC severity.
Purpose of the Study:
- To evaluate clinicopathological features in 170 CHC liver biopsies.
- To correlate histological grade and stage with epidemiological data and characteristic findings.
- To identify independent factors influencing CHC progression.
Main Methods:
- Retrospective analysis of 170 liver biopsies from CHC patients.
- Histological grading (inflammation) and staging (fibrosis) were performed.
- Correlation analysis with epidemiological data and specific histological features.
Main Results:
- Mild chronic hepatitis was observed in 61.2% of cases; 14.1% had cirrhosis.
- Older age (>40 years) was significantly associated with higher fibrosis stage (p < 10(-6)).
- Age was the only independent epidemiological factor linked to histological grade and stage (p < 10(-5)).
- Steatosis, lymphoid follicles/aggregates (F/A), and bile duct lesions were common, increasing with hepatitis grade.
- Lymphoid F/A and bile duct damage correlated with hepatitis activity and coexisted (p < 0.005).
Conclusions:
- Over half of CHC patients exhibit mild histological lesions.
- Age is the primary epidemiological determinant of CHC histological severity.
- Lymphoid F/A and bile duct damage are valuable indicators of hepatitis activity in CHC.
Background/Aims:
To evaluate the clinicopathological features of chronic hepatitis C, 170 liver biopsies were studied and histological grade and stage (degree of fibrosis) of hepatitis were correlated with epidemiological features and characteristic histological findings.
Methods/Results:
Normal liver was found in 3 (1.8%), minimal chronic hepatitis in 40 (23.5%), mild chronic hepatitis in 104 (61.2%) and moderate chronic hepatitis in 23 (13.5%) cases. Cirrhosis was observed in 24 (14.1%) patients and was more frequently encountered among patients more than 40 years old (34.4% vs 2.8%, p < 10(-6) and rarely among intravenous drug users in comparison with post-transfusion and sporadic cases (3% vs 25% and 20% respectively, p < 0.005). Minimal chronic hepatitis was more frequently observed among patients 40 years old or younger (30.3% vs 11.5%, p < 0.01)), while moderate chronic hepatitis was significantly more common in older age groups (24.6% vs 7.3%, p < 0.005). Multiple regression analysis revealed that only age was statistically related to histological grade and stage of hepatitis (p < 10(-5). The frequency of the histological features more likely seen in chronic hepatitis C, including steatosis (57.6%), lymphoid follicles and/or aggregates (F/A) (47.1%) and bile duct lesions (22.9%), increased with hepatitis grade and the latter two features were more often encountered in moderate chronic hepatitis (p < 0.005); in addition, both lesions statistically coexisted (p < 0.005). No correlation was found between histological findings and possible source of infection.
Conclusions:
More than half of the chronic hepatitis C patients presented mild histological lesions. Age was proven to be the only independent epidemiological factor related to histological grade and stage of hepatitis. Lymphoid F/A and bile duct damage are important diagnostic findings associated with hepatitis activity.