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 Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
overgrowth, chronic pancreatic ... Transcobalamin II deficiency ... #VitaminB12 #deficiency ... low #cobalamin #differential
Classification of Pancreatic Fluid Collections
Interstitial Edematous Pancreatitis: 
 < 4 weeks - Acute (peri)panreatic fluid collection
Classification of Pancreatic ... - Acute (peri)panreatic ... ≥ 4 weeks - Pancreatic ... Intra and/or extra pancreatic ... well-defined wall #Pancreatic
Overview of Pancreatic Cysts
True Epithelial Cyst
Serous Cystadenoma (SCA)
Mucinous Cystic Neoplasm (MCN)
Intraductal Papillary Mucinous Neoplasm (IPMN)
Cystic Neuroendocrine
Overview of Pancreatic ... Pseudocysts #Pancreatic ... comparison #table #differential
Pancreatic cystic lesions (PCLs)
 - classified into simple retention cysts, pseudocysts and cystic neoplasms 
 -
Pancreatic cystic ... @KM_Pawlak #Pancreatic ... diagnosis #management #differential
Pancreatic Cyst Diagnosis on Endoscopic Ultrasound EUS
Features of low cancer risk: No symptoms caused by the
Pancreatic Cyst ... widening of the main pancreatic ... , Widened main pancreatic ... duct #Pancreatic
General algorithm for the management of inflammatory pancreatic fluid collections. 

ANC, acute necrotic collection; APFC, acute
of inflammatory pancreatic ... walled-off-necrosis #pancreatic
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
-1 antitrypsin deficiency ... Acute #Causes #Differential
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Causes of Iron Deficiency ... Gastrointestinal #Iron #Deficiency ... Anemia #Causes #differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
α1-antitrypsin deficiency ... #Diagnosis #Differential
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