refusing upper endoscopy examination; presence of alarm features, including weight loss > 3 Kg, hematemesis, melena, or rectal bleeding, vomiting, dysphagia, anemia; pregnancy; history of drug ...

Background and Aim: Same-day bidirectional endoscopy, including esophagogastroduodenoscopy (EGD) and colonoscopy, is frequently performed to screen for cancer and gastrointestinal bleeding.