Examination of ESOPHAGUS, STOMACH, DUODENUM • Painless: Done under mild sedation • SAFE: in experienced hands. USES: 1. Diagnosing conditions: such as gastroesophageal reflux disease (GERD), ulcers, gastritis, Barrett's esophagus, celiac disease, and certain cancers. 2. Treatment: such as removing polyps, taking biopsies, and stopping active bleeding from ulcers or esophageal variceal banding 3. Monitoring: I the progression of their disease and assess the effectiveness of treatment. 4. Evaluation: Gastroscopy is often used to investigate symptoms such as persistent heartburn, difficulty swallowing, unexplained weight loss, or gastrointestinal bleeding.