Dr. Michael Chew @mchew85
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GrepMed Gastroenterology-Hepatology Editor, Academic Hospitalist UC Davis Medical Center Internal Medicine, Yale Gastroenterology Fellow '22
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Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
hepatitis - Acute biliary ... Hemochromatosis - Primary biliary ... -1 antitrypsin deficiency ... Acute #Causes #Differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
congenital - Primary biliary ... α1-antitrypsin deficiency ... #Diagnosis #Differential
Gallstone Diseases
1. Asymptomatic Stones 75%
2. Biliary Pain 20%
3. Acute Cholecystitis 10%
4. Mirizzi's Syndrome < 0.1%
5. Cholangitis/
Biliary Pain 20% ... Gallstone #Diseases #differential
Primary Biliary Cirrhosis - Pathophysiology
Environmental Risk Factors: Geographic location, Smoking, Microbial triggers, Xenobiotics, Nail polish
Epigentics Risk
Primary Biliary ... inflammation and biliary ... #PBC #Primary #Biliary
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Causes of Iron Deficiency ... Gastrointestinal #Iron #Deficiency ... Anemia #Causes #differential
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Transcobalamin II deficiency ... #VitaminB12 #deficiency ... low #cobalamin #differential
Primary Biliary Cirrhosis - Diagnosis Algorithm
Symptoms: Fatigue, Pruritus, Right upper quadrant discomfort
Signs: Jaundice, Xanthelasmata, Hepatomegaly
Associated history:
Primary Biliary ... #PBC #Primary #Biliary
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Evaluation of Iron Deficiency ... diagnose iron deficiency ... management #Iron #Deficiency
Difficult Selective Biliary Cannulation (SBC)
Factors associated with difficult SBC:
 - SMALL PAPILLA: can be difficult to
Difficult Selective Biliary ... site - OTHERS: biliary ... #Selective #Biliary
Common Bile Duct Biliary Stone removal on ERCP

Dr. Joaquín Berrueta Mezzera @DrJBerrueta

#Biliary #Stone #removal #extraction #ERCP
Common Bile Duct Biliary ... DrJBerrueta #Biliary