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Cholestatic Liver Disease: Primary Biliary Cirrhosis vs Primary Sclerosing Cholangitis

#pathophysiology #pbc #psc #hepatology #comparison
Cholestatic Liver ... Disease: Primary ... Biliary Cirrhosis ... Cholangitis #pathophysiology ... #pbc #psc #hepatology
Patterns of Liver Injury
Transaminase Levels:
  > 50x normal - Ischemic Hepatitis
  > 20x normal
> 50x normal - Ischemic ... CMV), Alcoholic cirrhosis ... AST:ALT = 1 - Ischemia ... Viral Hepatitis, Ischemic ... #Injury #hepatology
Primary Biliary Cirrhosis - Diagnosis Algorithm
Symptoms: Fatigue, Pruritus, Right upper quadrant discomfort
Signs: Jaundice, Xanthelasmata, Hepatomegaly
Associated history:
Primary Biliary ... Cirrhosis - Diagnosis ... Liver biopsy findings ... #PBC #Primary ... Diagnosis #Algorithm #hepatology
Primary Biliary Cirrhosis (PBC) - Summary

PBC Epidemiology:
 • Female:Male 9:1
 • Common European descent
 • Age:
Cirrhosis (PBC) ... Pathophysiology ... /Liver failure ... Symptoms: • 50 ... diagnosis #workup #hepatology
Abnormal Liver Function Tests - Differential Diagnosis Algorithm for Transaminitis
Hepatocellular Pattern (ALT or AST > ALP):
Abnormal Liver Function ... Drugs, Viral, Ischemia ... Ducts - PBC ... Congenital, Others, Cirrhosis ... Algorithm #diagnosis #hepatology
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
of Severe Acute Liver ... Injury - Ichemic ... - Drug-Induced liver ... Hemochromatosis - Primary ... #Differential #Hepatology
Elevated Liver Function Tests (LFTs) - Differential Diagnosis Framework
Mild (<100-500): 
 • NAFLD
 • Cirrhosis
 •
Elevated Liver Function ... • NAFLD • Cirrhosis ... (Drug-induced liver ... injury) • Ischemic ... Differential #Diagnosis #hepatology
Primary Biliary Cirrhosis - Pathophysiology
Environmental Risk Factors: Geographic location, Smoking, Microbial triggers, Xenobiotics, Nail polish
Epigentics Risk
Primary Biliary ... Cirrhosis - Pathophysiology ... relative with PBC ... #Cirrhosis #Pathophysiology ... #hepatology
Elevated Liver Enzymes - Differential Diagnosis Algorithm
Severe ALT > 15x ULN
 • Viral
 • Drugs/Toxins
 •
Elevated Liver Enzymes ... Drugs/Toxins • Ischemia ... Bile Ducts • PSC ... Infiltrative • Cirrhosis ... Others #LFTs #Hepatology
Alkaline Phosphatase (ALP) Elevation - Differential Diagnosis Algorithm

ALP:
 - Enzymes that catalyze hydrolysis of organic phosphate
disturbance (obstructed liver ... Highest • Bone • Liver ... Most common symptoms ... - Drugs - Primary ... Diagnosis #Algorithm #hepatology