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 Small Bowel Bleeding - Differential Diagnosis
Common Causes:
 • Under age 40 years: Inflammatory Bowel
Bowel Bleeding - Differential ... Plummer-Vinson syndrome ... Ehlers-Danlos syndrome ... , Inherited syndromes ... SmallBowel #Bleeding #Differential
Acute Esophageal Necrosis
History: Hematemesis and/or melena (70%), Dysphagia, Epigastric/chest pain, Sepsis
Diagnosis EGD and Biopsy
Differential: Melanosis, Melanoma,
EGD and Biopsy Differential ... Necrosis #black #esophagus
Gallstone Diseases
1. Asymptomatic Stones 75%
2. Biliary Pain 20%
3. Acute Cholecystitis 10%
4. Mirizzi's Syndrome < 0.1%
5. Cholangitis/
Mirizzi's Syndrome ... Fistula/Bouveret's Syndrome ... Gallstone #Diseases #differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
disease (Budd-Chiari syndrome ... #Diagnosis #Differential
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
rubber bleb nevus syndrome ... Anemia #Causes #differential
Abnormal liver function tests algorithm.
 This figure details the initial response to abnormal liver blood tests.
evaluation of the clinical ... /or suspicious clinical ... the remainder, a clinical ... presence of metabolic syndrome ... Liver #Enzymes #Differential
Boerhaave Syndrome on Endoscopy 

Boerhaave Syndrome with complete left wall dehiscence. This one went to surgery
Boerhaave Syndrome ... Boerhaave Syndrome ... #Boerhaave #Syndrome ... #clinical #endoscopy ... #video #EGD #esophagus
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
and Sjögren's syndrome ... low #cobalamin #differential
Pancreatic cystic lesions (PCLs)
 - classified into simple retention cysts, pseudocysts and cystic neoplasms 
 -
histological and clinical ... diagnosis #management #differential
Boerhaave Syndrome on Endoscopy - Pleural Space

Massive Spontaneous Esophageal Perforation (Boerhaave Syndrome) in active COVID 19
Boerhaave Syndrome ... Perforation (Boerhaave Syndrome ... #Boerhaave #Syndrome ... #clinical #endoscopy ... #video #EGD #esophagus