Biliary cirrhosis
Biliary Cirrhosis
Biliary cirrhosis is a chronic liver disease characterized by progressive destruction of the bile ducts within the liver, leading to cirrhosis. It is primarily classified into two types: Primary Biliary Cholangitis (PBC) and Secondary Biliary Cirrhosis.
Pathophysiology
Biliary cirrhosis involves the gradual destruction of the bile ducts, which impairs bile flow (cholestasis) and leads to liver damage. Over time, this results in fibrosis and cirrhosis of the liver. The exact cause of the bile duct destruction varies between primary and secondary forms.
Primary Biliary Cholangitis (PBC)
PBC is an autoimmune disease where the body's immune system attacks the small bile ducts within the liver. This leads to inflammation and scarring, eventually causing cirrhosis. The presence of antimitochondrial antibodies (AMAs) is a hallmark of PBC.
Secondary Biliary Cirrhosis
Secondary biliary cirrhosis occurs due to prolonged obstruction of the larger bile ducts outside the liver. Causes include gallstones, strictures, or tumors that block bile flow, leading to liver damage.
Clinical Presentation
Patients with biliary cirrhosis may present with:
- Fatigue
- Pruritus (itching)
- Jaundice
- Hepatomegaly (enlarged liver)
- Xanthomas (cholesterol deposits under the skin)
Diagnosis
Diagnosis of biliary cirrhosis involves a combination of:
- Liver function tests showing cholestatic pattern
- Presence of antimitochondrial antibodies (in PBC)
- Imaging studies such as ultrasound, CT scan, or MRI to assess bile duct structure
- Liver biopsy to confirm the diagnosis and assess the extent of liver damage
Treatment
Treatment aims to slow disease progression and manage symptoms. Options include:
- Ursodeoxycholic acid (UDCA) to improve bile flow
- Obeticholic acid for patients who do not respond to UDCA
- Symptomatic treatment for pruritus and fatigue
- Liver transplantation in advanced cases
Prognosis
The prognosis of biliary cirrhosis depends on the stage at diagnosis and response to treatment. Early diagnosis and treatment can slow progression and improve quality of life.
See Also
References
- Lindor, K. D., et al. (2009). "Primary Biliary Cirrhosis." Hepatology 50(1): 291-308.
- Kaplan, M. M., & Gershwin, M. E. (2005). "Primary biliary cirrhosis." New England Journal of Medicine 353(12): 1261-1273.
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