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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Irritable Bowel Syndrome (IBS) - Pathophysiology, Diagnosis and Management Algorithm
Risk factors: Previous acute enteric infection, Female
Irritable Bowel ... Syndrome (IBS) - ... functional somatic syndromes ... Pregabalin #IBS #Irritable ... #Bowel #Syndrome
Causes of Small Bowel Bleeding - Differential Diagnosis
Common Causes:
 • Under age 40 years: Inflammatory Bowel
Causes of Small ... Diagnosis Common Causes ... NSAID ulcers Rare Causes ... , Inherited syndromes ... Differential #Diagnosis #Causes
Trichuris dysentery syndrome on sigmoidoscopy (whipworms)

An 8y child was referred for sigmoidoscopy from a pediatric unit.
Trichuris dysentery syndrome ... paed unit for endoscopy ... polyp (mentioned cause ... Trichuris #dysentery #syndrome
Pancreatic Cyst Diagnosis on Endoscopic Ultrasound EUS
Features of low cancer risk: No symptoms caused by the
Cyst Diagnosis on Endoscopic ... risk: No symptoms caused ... risk: Symptoms caused ... such as jaundice, nausea
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 ... differential #diagnosis #causes
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Gastrointestinal Causes ... rubber bleb nevus syndrome ... Deficiency #Anemia #Causes
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
disease (Budd-Chiari syndrome ... Hepatology #Cirrhosis #Causes
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Causes of Low Vitamin ... and Sjögren's syndrome
Boerhaave Syndrome on Endoscopy 

Boerhaave Syndrome with complete left wall dehiscence. This one went to surgery
Boerhaave Syndrome ... on Endoscopy ... Boerhaave Syndrome ... #Boerhaave #Syndrome ... #clinical #endoscopy
Rome IV Criteria for the Irritable Bowel Syndrome.

#Diagnosis #PrimaryCare #IBS #IrritableBowelSyndrome #RomeIV #Criteria
Criteria for the Irritable ... Bowel Syndrome.