Diagnostic Endoscopy is a medical procedure that allows doctors to examine the interior of a patient's body using a flexible tube called an endoscope. This tube is equipped with a light and camera, enabling healthcare professionals to visualize organs and tissues in real-time. It is commonly used to investigate symptoms such as abdominal pain, gastrointestinal bleeding, or unexplained weight loss. During the procedure, the endoscope is inserted through natural openings, such as the mouth or rectum, depending on the area being examined. Diagnostic Endoscopy can help diagnose conditions like gastroesophageal reflux disease (GERD), ulcers, or cancers, and may also allow for tissue biopsies or the removal of polyps.