What is Esophagogastroduodenoscopy a procedure to?

Esophagogastroduodenoscopy (EGD) is a diagnostic procedure that allows doctors to examine the upper gastrointestinal tract, including the esophagus, stomach, and duodenum. During the procedure, a flexible tube with a camera, called an endoscope, is inserted through the mouth and advanced into the digestive tract. EGD is used to diagnose conditions such as ulcers, tumors, and inflammation, and it can also facilitate therapeutic interventions like biopsies or the removal of polyps.