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A lethal course of chronic hepatitis C, glomerulonephritis, and pulmonary vasculitis unresponsive to interferon
F X Roithinger1, S Allinger, A Kirchgatterer
1Department of Internal Medicine, General Hospital Wels, Austria.
Insights
Chronic hepatitis C can lead to severe kidney and lung vasculitis. This case highlights a rare complication and suggests immunosuppressive therapy may be needed when interferon fails.
Area of Science:
- Nephrology
- Pulmonology
- Infectious Diseases
Background:
- Chronic hepatitis C virus (HCV) infection is linked to various extrahepatic manifestations.
- Understanding these systemic complications is crucial for comprehensive patient management.
Observation:
- A 57-year-old woman with no hepatitis risk factors developed chronic active hepatitis C.
- Subsequently, she presented with membranoproliferative glomerulonephritis, cryoglobulinemia, and fingertip vasculitis.
- Pulmonary involvement manifested as progressive dyspnea and bilateral lung infiltrates.
Findings:
- The patient's condition did not improve with a 3-month course of interferon therapy.
- Autopsy confirmed diffuse pulmonary vasculitis as the cause of respiratory failure.
- This case represents the first documented instance of HCV, glomerulonephritis, and cryoglobulinemia complicated by pulmonary vasculitis.
Implications:
- Hepatitis C-associated glomerulonephritis and vasculitis can lead to severe, life-threatening pulmonary complications.
- Interferon therapy may be ineffective for these complex presentations.
- Immunosuppressive therapy should be considered as a potential treatment option for severe HCV-related vasculitis.
Abstract:
Several extrahepatic syndromes have been associated with chronic hepatitis C virus infection. In our patient (a 57-yr-old woman without risk factors for hepatitis), chronic active hepatitis C was diagnosed serologically and histologically. Three months later, membranoproliferative glomerulonephritis with compromised renal function and peripheral edema, cryoglobulinemia, and a vasculitis of the finger tips developed. During interferon treatment for 3 months, neither the clinical condition nor serological parameters improved significantly. Progressive dyspnea was due to bilobar pulmonary infiltration. Despite antibiotic, virostatic, and corticosteroid therapy, the patient died from respiratory failure. Autopsy revealed diffuse pulmonary vasculitis. Thus, this is the first description of chronic hepatitis C virus infection, glomerulonephritis, and cryoglobulinemia complicated by immunologically mediated pulmonary vasculitis. Because interferon therapy may be ineffective, immunosuppressive therapy should be considered.