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Difficulty: HardGastroenterology and Hepatology

Match each clinical and serological laboratory profile to the most appropriate hepatobiliary diagnosis.

  • Significantly elevated alkaline phosphatase, positive anti-mitochondrial antibodies (AMA), and a normal magnetic resonance cholangiopancreatography (MRCP)Primary Biliary Cholangitis
  • Elevated alkaline phosphatase, positive p-ANCA, and multifocal stricturing with dilation of both intrahepatic and extrahepatic bile ducts on MRCPPrimary Sclerosing Cholangitis
  • Markedly elevated AST and ALT, elevated total IgG, positive anti-smooth muscle antibodies (ASMA), and normal biliary imagingAutoimmune Hepatitis
  • Elevated transferrin saturation (>45%), elevated serum ferritin, and positive HFE gene C282Y mutationHereditary Hemochromatosis
  • Elevated AST and ALT, decreased serum ceruloplasmin, elevated 24-hour urinary copper, and presence of Kayser-Fleischer ringsWilson Disease

Answer

The profiles correspond to Primary Biliary Cholangitis, Primary Sclerosing Cholangitis, Autoimmune Hepatitis, Hereditary Hemochromatosis, and Wilson Disease based on their distinct serological and imaging markers.
Each clinical profile provides a definitive set of serological, imaging, or genetic markers that pathognomonically identify specific autoimmune and metabolic liver diseases. Recognizing these distinct patterns is essential for appropriate diagnosis and targeted management.

Step-by-Step Solution

1
Determine the primary pattern of liver injury.
Profiles 1 and 2 show a cholestatic pattern (elevated alkaline phosphatase), while profiles 3, 4, and 5 show a hepatocellular or mixed pattern.
Categorizing the liver enzyme derangement narrows the differential diagnosis significantly.
2
Analyze the cholestatic profiles using imaging and specific autoantibodies.
A normal MRCP with positive AMA confirms Primary Biliary Cholangitis (small duct disease). An abnormal MRCP with strictures and positive p-ANCA confirms Primary Sclerosing Cholangitis (large duct disease).
Imaging separates microscopic from macroscopic biliary destruction, while autoantibodies provide etiological confirmation.
3
Differentiate the hepatocellular profiles using specific metabolic and autoimmune markers.
Positive ASMA and high IgG indicate Autoimmune Hepatitis. Iron overload and HFE mutation indicate Hemochromatosis. Low ceruloplasmin and high urinary copper indicate Wilson Disease.
These unique biomarkers definitively identify the underlying pathophysiology of the hepatocellular damage.

Key Concept

Diagnosis of Autoimmune and Metabolic Liver Diseases
Estimated Time:2m 0s
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Topics

Gastroenterology and Hepatology

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