Endoscopic Ultrasound (EUS) is a procedure performed using an approach similar to a standard endoscopic examination. This procedure can be used to evaluate both the upper gastrointestinal tract (esophagus, stomach, and duodenum) and the lower gastrointestinal tract (colon). During the approximately 30-minute procedure, sedation and pain relief medications are administered to ensure patient comfort. The procedure is generally completed smoothly and easily. Outpatients are discharged after a few hours of post-procedure rest and can usually return to their normal daily lives the following day.