What test confirms the diagnosis of biliary cirrhosis?

What test confirms the diagnosis of biliary cirrhosis?

• A. Liver biopsy
• B. Ultrasound
• C. Antimitochondrial antibodies alone
• D. Elevated alkaline phosphatase alone

Answer: (A)

Diagnosing biliary cirrhosis relies on histology from a liver biopsy. This disease—often presenting with cholestatic labs and sometimes a positive antimitochondrial antibody—needs tissue confirmation because the serology and imaging findings can be non-specific. A liver biopsy reveals the characteristic histologic picture: destruction of small intrahepatic bile ducts with portal inflammation, possible granulomas, and varying stages of fibrosis leading to cirrhosis. This tissue diagnosis not only confirms the condition but also helps assess how advanced the fibrosis is, which matters for prognosis and management. Elevated alkaline phosphatase alone is indicative of cholestasis but not specific to biliary cirrhosis, and imaging like ultrasound can suggest chronic liver changes or exclude obstruction but cannot confirm the diagnosis. Antimitochondrial antibodies support the suspicion but are not definitive on their own.

Diagnosing biliary cirrhosis relies on histology from a liver biopsy. This disease—often presenting with cholestatic labs and sometimes a positive antimitochondrial antibody—needs tissue confirmation because the serology and imaging findings can be non-specific. A liver biopsy reveals the characteristic histologic picture: destruction of small intrahepatic bile ducts with portal inflammation, possible granulomas, and varying stages of fibrosis leading to cirrhosis. This tissue diagnosis not only confirms the condition but also helps assess how advanced the fibrosis is, which matters for prognosis and management. Elevated alkaline phosphatase alone is indicative of cholestasis but not specific to biliary cirrhosis, and imaging like ultrasound can suggest chronic liver changes or exclude obstruction but cannot confirm the diagnosis. Antimitochondrial antibodies support the suspicion but are not definitive on their own.