الفهرس 
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Abstract
Acute gastrointestinal bleeding is a potentially life-threatening abdominal emergency that remains a common cause of hospitalization.
In Egypt the portal hypertension and variceal bleeding are the commonest causes of upper gastrointestinal bleeding as documented by various studies.
Advances in endoscopic techniques have rendered endoscopy as the 1st line of diagnostic and therapeutic interventions for patients with upper gastrointestinal bleeding. It improves outcome of these patients significantly decreasing both recurrent bleeding and mortality.
Aim of the study:
This study was designed to determine the etiology of upper gastrointestinal bleeding in Mansoura Insurance Hospitals and to assess risk factors that may be implicated in morbidity and mortality in these patients
Patients and methods:
A total of one thousand patients were selected from one thousand and two hundred patients who were referred to the endoscopy unit of Mansaura Insurance Hospitals complaining of active upper gastro-intestinal bleeding (hematemsis and or melena) / during the period between May 2011 to January 2013after taking an informed consent .They were 592 males and 408 females, their ages were ranging from 20 to 70 years with mean value of 51.5±15.2.