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Difficulty: HardGastroenterology and Hepatology

Match each patient's clinical presentation with the most appropriate specific diagnostic evaluation or characteristic finding used to establish the diagnosis.

  • A 48-year-old woman with chronic fatigue, severe generalized pruritus, hypercholesterolemia, and an isolated alkaline phosphatase elevation.Anti-mitochondrial antibody assay
  • A 32-year-old man with a history of recurrent bloody diarrhea and abdominal pain now presenting with jaundice, fatigue, and right upper quadrant discomfort.Magnetic resonance cholangiopancreatography
  • A 29-year-old woman with amenorrhea, fatigue, recurrent joint pains, significantly elevated serum aminotransferases, and hypergammaglobulinemia.Anti-smooth muscle antibody assay
  • A 55-year-old man with new-onset polyuria, erectile dysfunction, hepatomegaly, and hyperpigmented skin on sun-exposed areas.HFE gene mutation analysis
  • A 22-year-old man with progressive resting tremor, deteriorating academic performance, mild hepatomegaly, and Coombs-negative hemolytic anemia.Slit-lamp examination for corneal deposits

Answer

The correct pairings appropriately match autoimmune, structural, and metabolic hepatobiliary disorders with their gold-standard diagnostic modalities based on characteristic clinical clues.
Each clinical vignette provides classic epidemiological and symptomatic clues that point toward a specific autoimmune or metabolic liver disease. Recognizing the underlying pathophysiology dictates the precise diagnostic test, distinguishing between serologic assays, genetic testing, physical exam findings, and imaging.

Step-by-Step Solution

1
Analyze the first presentation: middle-aged woman, pruritus, cholestasis.
Identify suspected Primary Biliary Cholangitis.
PBC classically affects middle-aged women and presents with fatigue, pruritus, and elevated alkaline phosphatase.
2
Analyze the second presentation: young man, bloody diarrhea (ulcerative colitis), jaundice.
Identify suspected Primary Sclerosing Cholangitis.
PSC is strongly associated with inflammatory bowel disease, particularly ulcerative colitis, and causes obstructive jaundice.
3
Analyze the third presentation: young woman, markedly elevated AST/ALT, hypergammaglobulinemia.
Identify suspected Autoimmune Hepatitis.
AIH presents with hepatocellular injury rather than cholestasis, often accompanied by other autoimmune features and high IgG levels.
4
Analyze the fourth presentation: older man, diabetes, skin pigmentation, hepatomegaly.
Identify suspected Hereditary Hemochromatosis.
This is the classic presentation of iron overload affecting the liver, pancreas, skin, and pituitary gland (causing secondary hypogonadism).
5
Analyze the fifth presentation: young adult, tremor, liver dysfunction, hemolytic anemia.
Identify suspected Wilson disease.
Copper accumulation in the liver, brain (basal ganglia), and red blood cells causes this specific triad of symptoms.

Key Concept

Diagnostic modalities for autoimmune and metabolic liver diseases
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Topics

Gastroenterology and Hepatology

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