20 results
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Causes of Vitamin ... B12 Deficiency ... Intestine: SIBO, Celiac ... disease, IBD, Lymphoma ... infection, B12 malabsorption
Causes of Pediatric Diarrhea - Differential Diagnosis Algorithm
Infectious:
 • Viral
 • Bacterial
 • Parasitic
Malabsorption:
 • Lactase
Causes of Pediatric ... • Parasitic Malabsorption ... : • Lactase Deficiency ... Cystic Fibrosis • Celiac ... Diagnosis #Algorithm #Causes
Chronic Diarrhea Differential Diagnosis
 • Inflammatory, Infectious: Recurrent C. diff, Giardiasis
 • Inflammatory, Non-infectious: IBD, Ischemia,
Chronic Diarrhea ... Non-infectious: IBD ... Bacterial overgrowth, Celiac ... #Diagnosis #causes ... #gastroenterology
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Causes of Low Vitamin ... syndrome Food-bound cobalamin ... malabsorption - ... Crohn 's disease, coeliac ... #low #cobalamin
Causes of Iron Deficiency - Differential Diagnosis Algorithm
 • Blood loss: GI (cancer, ulcer, IBD), GU
Causes of Iron Deficiency ... cancer, ulcer, IBD ... diet MALABSORPTION ... of absorption): Celiac ... #Diagnosis #Causes
Causes of Fat Malabsorption - Differential Diagnosis
Biliary Duct Obstruction
 • Autoimmune— PBC, PSC
 • Infection— liver
Causes of Fat Malabsorption ... Crohn's disease, celiac ... - Acquired • Chronic ... Pancreatic lipase deficiency ... disease • IBD
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
Causes of Iron Deficiency ... Drugs, H pylori, Celiac ... Inflammation: IBD ... , Chronic disease ... #Deficiency #Causes
Causes of Iron Deficiency
 • Inadequate Intake: Vegetarian/vegan diet, Malnutrition
 • Increased Body Needs: Infants/preschoolers, Pregnancy,
Causes of Iron Deficiency ... Elite athletes • Chronic ... Bleeding, Edema, Celiac ... Inflammatory Disease (IBD ... , cancer) #Iron
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
inflammation or chronic ... tests Test for celiac ... serology first Small bowel ... identification of small bowel ... workup #diagnosis #gastroenterology
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
GI: • Small bowel ... diarrhea • Enteric ... Decreased Intake - Malabsorption ... • Inflammatory Bowel ... endocrinology #causes