[Comparative morphologic characteristics of viral hepatitis B and C]

Area of Science:

• Hepatology
• Virology
• Pathology

Background:

• Chronic hepatitis B (HBV) and hepatitis C (HCV) are significant global health concerns.
• Distinguishing between HBV and HCV infections, especially in co-infections, is crucial for effective management.
• Liver biopsy analysis provides essential morphological insights into viral hepatitis pathogenesis.

Purpose of the Study:

• To identify and compare distinct morphological differences in liver biopsies between chronic HBV and HCV infections.
• To elucidate the significance of specific histological markers in diagnosing HBV, HCV, and HBV/HCV co-infections.
• To determine etiological markers indicative of the predominant replicating virus in co-infections.

Main Methods:

• Analysis of liver biopsies from patients with chronic HBV, chronic HCV, and HBV/HCV co-infections.
• Histopathological examination to identify and quantify specific cellular and tissue alterations.
• Correlation of morphological findings with etiological viral markers.

Main Results:

• Nonspecific morphological markers were observed in both HBV and HCV infections.
• Hepatitis C was associated with fat and hydropic hepatocyte degeneration, lymphoid follicles, sinusoidal changes, and ductular alterations.
• Hepatitis B was characterized by ground-glass hepatocytes and "sand" nuclei.
• Combinations of these markers were characteristic of HBV/HCV co-infections, reflecting the predominant replicating virus.

Conclusions:

• Distinct histopathological features can differentiate between chronic HBV and HCV infections.
• Specific morphological markers are valuable for diagnosing HBV, HCV, and their co-infections.
• Liver biopsy analysis aids in identifying the dominant viral activity in cases of HBV/HCV co-infection.