Hepatitis Unusual gastrointestinal infection Unusual liver infection An atypical or infrequent infectious process affecting the liver parenchyma that deviates from common viral or bacterial patterns. This may include infections caused by rare pathogens (e.g., specific fungi, parasites, or rare bacteria) or infections presenting with atypical clinical or pathological features. Non-canonical liver infection This term is intended to capture rare or atypical infectious etiologies of liver inflammation that are not covered by standard viral hepatitis categories (A-E). It includes infections caused by opportunistic pathogens, rare fungi, or parasites in both immunocompetent and immunocompromised hosts. Atypical hepatic infection