This procedure allows your physician to examine your esophageal and stomach linings, and the walls of your upper and lower gastrointestinal tract. With the help of an endoscope and an ultrasound probe, we will use sound waves to create visual images of your digestive tract. EUS can be used to diagnose conditions that may cause abdominal pain or abnormal weight loss, as well as examine known lumps or lesions. This procedure is performed at the hospital.