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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diagnosis differential gastroenterology algorithm bowel hepatology ibs management criteria deficiency low pathophysiology romeiv abdominalpain anemia bleeding carcinoid cirrhosis cobalamin colonoscopy
Causes of a low fecal elastase Abnormal pancreatic imaging: Chronic pancreatitis, Pancreatic tumours including cystic disease, Pancreatic resection,
Causes of a low ... Shwachman-Diamond syndrome ... acid diarrhoea, Irritable ... bowel syndrome, ... Rheumatological disorders
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
Carcinoid Syndrome - Pathophysiology, Signs and Symptoms Symptoms: Flushing, diarrhea, palpitations, bronchospasm Complications: Carcinoid heart, mesenteric fibrosis, pellagra,
Carcinoid Syndrome ... neuropsychological disorders ... #Carcinoid #Syndrome
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
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 Trichuris dysentery syndrome on sigmoidoscopy (whipworms) An 8y child was referred for sigmoidoscopy from a pediatric unit.
Trichuris dysentery syndrome ... polyp (mentioned cause ... Trichuris #dysentery #syndrome
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 Ileal Pouch Disorders - Differential Diagnosis • Surgical/Mechanical: Anastomotic leak, Pelvic sepsis, Sinus, Fistula, Strictures, Efferent
Ileal Pouch Disorders ... Efferent limb syndrome ... • Functional: Irritable ... pouch syndrome, ... #Ileal #Pouch #Disorders
Secondary Causes of Esophageal Eosinophilia (EoE) - Differential Diagnosis • Gastroesophageal reflux disease • Eosinophilic gastrointestinal
Secondary Causes ... Hypereosinophilic syndrome ... Connective tissue disorders ... • Autoimmune disorders ... Diagnosis #Secondary #Causes
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