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Sarcoidosis-associated hepatitis C virus infection
1Service de Médecine Interne et Maladies Infectieuses, Hôpital Saint-André, Bordeaux, France.
Digestive Diseases and Sciences
|May 7, 2002
Summary
Hepatitis C virus (HCV) infection may trigger sarcoidosis, a granulomatous disease, even without interferon treatment. This suggests HCV itself can stimulate an immune response leading to sarcoidosis in chronic infections.
Area of Science:
- Immunology
- Hepatology
- Pulmonology
Background:
- Reports have linked sarcoidosis to interferon-alpha treatment in hepatitis C virus (HCV)-infected patients.
- The association between sarcoidosis and chronic HCV infection in untreated patients remains underexplored.
Observation:
- Two cases of multivisceral sarcoidosis (cutaneous, pulmonary, nodal) are presented in patients with chronic hepatitis C infection.
- Sarcoidosis developed 2 and at least 6 years post-presumed HCV infection.
- Corticosteroid treatment led to remission in one patient, while the other required ongoing therapy; hepatic enzymes remained stable.
Findings:
- Chronic hepatitis C virus infection may directly induce sarcoidosis.
- HCV stimulation of the cellular immune system could be the underlying mechanism for granulomatous reactions.
- The development of sarcoidosis is independent of interferon-alpha treatment in these cases.
Implications:
- Hepatitis C virus infection should be considered in patients diagnosed with sarcoidosis.
- Patients with chronic HCV infection require monitoring for granulomatous lesions, irrespective of treatment status.
- This association highlights a potential autoimmune or immune dysregulation component in chronic HCV infection.