3 results
Upper and Lower Causes of GI Bleed
Upper:
 • Esophagus: Tear (Mallory Weiss, Boerhaave syndrome), Variceal, Esophagitis,
Upper and Lower Causes ... of GI Bleed Upper ... colitis, UC/Chrons (IBD ... Radiation CMC IM ... #algorithm
Occult and Lower Gastronintestinal Bleed - Differential Diagnosis Algorithm

Occult (Stool + Occult blood and/or iron deficiency
• Occult UGI bleeding ... , asymptomatic IBD ... Overt Bleeding ... OUT BRISK Upper GI ... #Causes
Vitamin B12 (Cobalamin) Deficiency
Etiology:
 • Vit B12 - aka cobalamin. Present in foods derived from animal
• Common Causes ... diarrhea related to IBD ... total body stores Evaluation ... , can consider IM ... by approx. lg per