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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Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Gastrointestinal ... Causes of Iron Deficiency ... Factitious #Gastrointestinal ... #Iron #Deficiency ... Anemia #Causes #differential
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Gastrointestinal ... Evaluation of Iron Deficiency ... diagnose iron deficiency ... management #Iron #Deficiency ... #Anemia #Gastrointestinal
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
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
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
-1 antitrypsin deficiency ... Acute #Causes #Differential
Common Etiologies of Cirrhosis

Inflammation

 - Hepatitis B (15 percent)

 - Hepatitis C (47 percent)

 - Schistosomiasis
α1-antitrypsin deficiency ... #Diagnosis #Differential
Causes of a low fecal elastase
Abnormal pancreatic imaging:
Chronic pancreatitis, Pancreatic tumours including cystic disease, Pancreatic resection,
elastase Abnormal pancreatic ... pancreatitis, Pancreatic ... cystic disease, Pancreatic ... resection, Pancreatic ... elastase #low #differential
Secondary Causes of Esophageal Eosinophilia (EoE) - Differential Diagnosis
 • Gastroesophageal reflux disease
 • Eosinophilic gastrointestinal
Eosinophilia (EoE) - Differential ... • Eosinophilic gastrointestinal ... #Eosinophilic #Differential
Ileal Pouch Disorders - Differential Diagnosis
 • Surgical/Mechanical: Anastomotic leak, Pelvic sepsis, Sinus, Fistula, Strictures, Efferent
Pouch Disorders - Differential ... loss, Vit D/B12 deficiency ... Pouch #Disorders #Differential