Upper GI Endoscopy is a medical procedure that allows doctors to examine the upper part of the gastrointestinal tract, including the esophagus, stomach, and the first part of the small intestine. A thin, flexible tube called an endoscope is inserted through the mouth and guided down the throat. This tube has a light and camera, enabling the doctor to view the lining of these organs on a monitor. The procedure is typically performed to investigate symptoms such as persistent heartburn, difficulty swallowing, or unexplained abdominal pain. It can also be used to take biopsies or remove abnormal growths. Patients are usually given a sedative to help them relax during the process.