You searched for: “esophago gastro duodenoscopy
esophago-gastro-duodenoscopy
Endoscopy of the upper alimentary tract.

For endoscopy, a flexible opitical instrument (the endoscope) is inserted through the mouth and advanced into the esophagus, the stomach, and the duodenum (the first part of the small intestine).

Pathologicl changes (diseases, if any) are also evaluated by inflating air into the digestive tract.