Diagnosaurus
Occult gastrointestinal (GI) bleeding
Etiology
- Malignancy
- Vascular ectasias (angiodysplasias), eg, idiopathic arteriovenous malformation (AVM), CREST syndrome, hereditary hemorrhagic telangiectasias
- Portal hypertensive gastropathy
- Peptic ulcer disease
- Ulcerated polyp
- Infections, eg, hookworm, tuberculosis (TB)
- Drugs, eg, NSAIDs, aspirin
- Inflammatory bowel disease
- Malabsorption, especially celiac sprue
- Menstrual or pregnancy-associated iron loss
- Idiopathic
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Last updated: December 1, 2014
Citation
Zeiger, Roni F.. "Occult Gastrointestinal (GI) Bleeding." Diagnosaurus, 4th ed., McGraw-Hill Education, 2014. Medicine Central, im.unboundmedicine.com/medicine/view/Diagnosaurus/114458/all/Occult_gastrointestinal__GI__bleeding.
Zeiger RFR. Occult gastrointestinal (GI) bleeding. Diagnosaurus. McGraw-Hill Education; 2014. https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114458/all/Occult_gastrointestinal__GI__bleeding. Accessed July 18, 2025.
Zeiger, R. F. (2014). Occult gastrointestinal (GI) bleeding. In Diagnosaurus (4th ed.). McGraw-Hill Education. https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114458/all/Occult_gastrointestinal__GI__bleeding
Zeiger RFR. Occult Gastrointestinal (GI) Bleeding [Internet]. In: Diagnosaurus. McGraw-Hill Education; 2014. [cited 2025 July 18]. Available from: https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114458/all/Occult_gastrointestinal__GI__bleeding.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Occult gastrointestinal (GI) bleeding
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A1 - Zeiger,Roni F,
Y1 - 2014/12/01/
BT - Diagnosaurus
UR - https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114458/all/Occult_gastrointestinal__GI__bleeding
PB - McGraw-Hill Education
ET - 4
DB - Medicine Central
DP - Unbound Medicine
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