الفهرس 
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Abstract
OGIB (obscure gastrointestinal bleeding) is defined as a bleeding from an unknown site after a negative endoscopic evaluation of the GI tract with esophagogastroduodenoscopy (EGD) and ileocolonoscopy. OGIB accounts for approximately 5% of patients presenting with GI bleeding OGIB may be categorized by two important aspects: its characteristics, i.e. overt or occult and its location are upper, lower, or mid-bowel Occult bleeding will usually present as anemia or positive occult blood in the stool, while overt bleeding will present as haematemesis, melena or hematocheziaCapsule endoscopy has provided an additional diagnostic tool to evaluate obscure GI bleeding. The capsule traverses the whole mucosa, imaging most of the small intestine The main advantages of capsule endoscopy (CE) include patient comfort, the ability to review the images, procedure safety, and the ability to conduct the procedure in a variety of settings, image quality comparable to other forms of endoscopy There are some limitations of the video capsule endoscopy (VCE) that include the impossibility of air insufflation, the relatively high cost, the unavailability of taking biopsies or treating lesions The main aim of study is to investigate the yield of using the capsule endoscopy (CE) on the diagnosis of Egyptian patients with obscure (occult or overt) gastrointestinal (GI) bleedingThirty two patients were enrolled in the study to assess the diagnostic yield of capsule endoscopy (CE) in Egyptian patients presented with obscure (occult or overt) gastrointestinal (GI) bleeding and iron deficiency anemia Consecutive patients with OGIB (overt or occult) were referred For CE during the 30-month period (from June 2017 to December 2019) to the endoscopy unit at Ain shams university hospital (Al Demerdash university hospital).