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 a low fecal elastase
Abnormal pancreatic imaging:
Chronic pancreatitis, Pancreatic tumours including cystic disease, Pancreatic resection,
Causes of a low ... Pancreatic atrophy, Acute ... fecal #elastase #low ... #differential # ... diagnosis #causes
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
Causes of Severe Acute ... hepatitis - Acute ... hepatitis - Wilson disease ... #Causes #Differential ... #Hepatology #Diagnosis
Gallstone Diseases
1. Asymptomatic Stones 75%
2. Biliary Pain 20%
3. Acute Cholecystitis 10%
4. Mirizzi's Syndrome < 0.1%
5. Cholangitis/
Gallstone Diseases ... Acute Cholecystitis ... #Gallstone #Diseases ... #differential # ... diagnosis #causes
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
B12 Levels Low ... insufficiency, Crohn 's disease ... , coeliac disease ... #cobalamin #differential ... #diagnosis
Table of Causes of Acute Liver Injury
#Diagnosis #Hepatology #Acute #Liver #Injury #Causes #Differential #Incidence #Table #Failure
Table of Causes of Acute ... Liver Injury #Diagnosis ... #Hepatology #Acute ... Injury #Causes #Differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
Nonalcoholic fatty liver disease ... - Wilson disease ... Venoocclusive disease ... 14 percent) #Diagnosis ... #Differential #
Acute Esophageal Necrosis
History: Hematemesis and/or melena (70%), Dysphagia, Epigastric/chest pain, Sepsis
Diagnosis EGD and Biopsy
Differential: Melanosis, Melanoma,
Acute Esophageal ... chest pain, Sepsis Diagnosis ... EGD and Biopsy Differential ... Braghirol @KBrag_MD #Acute ... black #esophagus #diagnosis
Deciphering the SAAG - Serum to Ascites Albumin Gradient
Ascites is either made in the liver sinusoid
the blood The diseased ... oncotic pressure Low ... Matherly @liverprof #Diagnosis ... Interpretation #Differential
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
sprue, Whipple's disease ... ulcers, Crohn's disease ... Anemia #Causes #differential ... #diagnosis
Causes of Small Bowel Bleeding - Differential Diagnosis
Common Causes:
 • Under age 40 years: Inflammatory Bowel
Bowel Bleeding - Differential ... Diagnosis Common ... Inflammatory Bowel Disease ... SmallBowel #Bleeding #Differential ... #Diagnosis #Causes