Esophagogastroduodenoscopy (EGD) is a test procedure to examine the lining of the esophagus, stomach, and first part of the small intestine. The procedure uses an endoscope. This is a flexible tube with a light and camera at the end. A biopsy can be taken through the endoscope of any suspicious areas that are seen.
Review Date: 11/4/2021
Reviewed By: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.