Upper Endoscopy

An endoscopy is a medical procedure that lets your doctor examine the lining of the upper part of your gastrointestinal tract, which includes the esophagus, stomach, and the beginning of the small intestine. This is done by inserting a small, flexible tube that has a light source and tiny camera into your mouth and viewing the images on a screen.
An endoscopy, or upper GI endoscopy, lets your gastroenterologist look for the causes of persistent nausea or upper abdominal pain, swallowing difficulties or vomiting, or sources of bleeding in the upper gastrointestinal tract. Since instruments can be passed through the endoscope, it is also used to get small tissue samples for examination in a lab.