Natural history of hepatitis B.
Minerva Gastroenterol Dietol
; 51(1): 63-75, 2005 Mar.
Article
en En
| MEDLINE
| ID: mdl-15756147
ABSTRACT
The natural course of hepatitis B virus (HBV) chronic infection is variable, ranging from an inactive HBsAg carrier state to a more or less progressive chronic hepatitis, potentially evolving to cirrhosis and hepatocellular carcinoma (HCC). Chronic hepatitis may present as typical HBeAg-positive chronic hepatitis B or HBeAg-negative chronic hepatitis B. HBeAg-positive chronic hepatitis is due to wild type HBV; it represents the early phase of chronic HBV infection. HBeAg-negative chronic hepatitis is due to a naturally occurring HBV variant with mutations in the precore or/and basic core promoter regions of the genome; it represents a late phase of chronic HBV infection. The latter form of the disease has been recognized as increasing in many countries within the last decade and it represents the majority of cases in many countries. HBeAg-negative chronic hepatitis B is generally associated with a more severe liver disease with a very low rate of spontaneous disease remission and a low sustained response rate to antiviral therapy. Longitudinal studies of patients with chronic hepatitis B indicate that, after diagnosis, the 5-year cumulative incidence of developing cirrhosis ranges from 8-20%. Morbidity and mortality in chronic hepatitis B are linked to evolution to cirrhosis or HCC. The 5-year cumulative incidence of hepatic decompensation is approximately 20%. The 5-year probability of survival is approximately 80-86% in patients with compensated cirrhosis. Patients with decompensated cirrhosis have a poor prognosis (14-35% probability of survival at 5 years). HBV-related end-stage liver disease or HCC are responsible for at least 500,000 deaths per year.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Hepatitis B
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Prognostic_studies
Límite:
Adolescent
/
Adult
/
Child
/
Humans
Idioma:
En
Revista:
Minerva Gastroenterol Dietol
Asunto de la revista:
CIENCIAS DA NUTRICAO
/
GASTROENTEROLOGIA
Año:
2005
Tipo del documento:
Article
País de afiliación:
Francia