421 results
Causes of Vitamin B12 Deficiency - Cobalamin
Decreased Intake
Pancreas: Insufficiency
Intestine: SIBO, Celiac disease, IBD, Lymphoma, Amyloidosis, Resection,
Stomach: Pernicious anemia ... malabsorption, Gastritis
Gastrointestinal Causes of Iron Deficiency Anemia
 • Mass lesions: Carcinoma, Large polyps
 • Inflammatory: Reflux esophagitis,
Iron Deficiency Anemia ... lesions, Erosive gastritis ... Iron #Deficiency #Anemia
Iron Deficiency Anemia - Differential Diagnosis Algorithm

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

 • Blood loss:
Iron Deficiency Anemia ... pylori, Atrophic gastritis ... Iron #Deficiency #Anemia
Causes of Iron Deficiency
 • Diet: ↓ Intake, e.g. vegan, Malnutrition, Polyphenol / tannins, ↓ Vitamin
↓ Absorption: Gastritis ... differential #diagnosis #anemia
5 D's Mnemonic for Causes of Iron Deficiency Anemia (IDA)
Diet - lacking iron, vitamin C, too
Iron Deficiency Anemia ... autoimmune atrophic gastritis ... Iron #Deficiency #Anemia
Occult and Lower Gastronintestinal Bleed - Differential Diagnosis Algorithm

Occult (Stool + Occult blood and/or iron deficiency
iron deficiency anemia ... , esophagitis, gastritis
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
appropriate for GIB/anemia ... : esophagitis, gastritis
Rheumatoid Arthritis - Signs and Symptoms
 • Ocular: Keratoconjunctivitis sicca, Episcleritis, Scleritis, Scleromalacia perforans
 • Pulmonary:
: Esophagitis, gastritis ... Hematological: Anemia
Gastric Neuroendocrine Tumor (NET) Types
Type 1 - Chronic atrophic gastritis and pernicious anaemia
Type 2 - Zollinger
Chronic atrophic gastritis ... and pernicious anaemia
Causes of Low Vitamin B12 Levels
Low vitamin B12 intake - Vegetarianism, chronic alcoholism and older people
Autoimmune
Autoimmune - Pernicious anaemia ... malabsorption - Atrophic gastritis ... , chronic gastritis ... pylori-associated gastritis