2198 results
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
malabsorption - Atrophic gastritis ... , chronic gastritis ... pylori-associated gastritis ... low #cobalamin #differential
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
malabsorption, Gastritis ... Deficiency #Cobalamin #differential
Chest Pain - Differential Diagnosis Framework

Cardiovascular Causes of Chest Pain:
 • Myocardium:
	- Myocarditis
	- CAD/ACS
	- Valvulopathy
	- Myopericarditis
Chest Pain - Differential ... : - GERD - Gastritis ... Pain #ChestPain #Differential
Upper Gastronintestinal Bleed - Differential Diagnosis Algorithm
Acute Hematemesis/Melena
 - Blood in vomitus?/black, tarry stools
 - If
Gastronintestinal Bleed - Differential ... Esophagitis / Gastritis ... Gastronintestinal #Differential
Causes of Iron Deficiency
 • Inadequate Intake: Vegetarian/vegan diet, Malnutrition
 • Increased Body Needs: Infants/preschoolers, Pregnancy,
absorption: AI gastritis ... Iron #Deficiency #differential
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
↓ Absorption: Gastritis ... Deficiency #Causes #differential
Upper and Lower Causes of GI Bleed
Upper:
 • Esophagus: Tear (Mallory Weiss, Boerhaave syndrome), Variceal, Esophagitis,
NSAIDs, Hpylori), Gastritis ... Lower #GIBleed #differential
Iron Deficiency Anemia - Differential Diagnosis Algorithm

Labs: Ferritin, iron, transferrin, TIBC, TSAT, sTfR

 • Blood loss:
Deficiency Anemia - Differential ... pylori, Atrophic gastritis ... Deficiency #Anemia #Differential
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
lesions, Erosive gastritis ... Anemia #Causes #differential
Pediatric Acute Abdominal Pain - Differential Diagnosis Algorithm
Generalized/Migratory:
 • Intussusception
 • Gastroenteritis
 • Viral Illness
 •
Abdominal Pain - Differential ... Epigastric: • Gastritis ... AbdominalPain #Differential