what is a EDG
Esophagogastroduodenoscopy (also spelled oesophagogastroduodenoscopy) or panendoscopy is a diagnostic endoscopic procedure that visualizes the upper part of the gastrointestinal tract up to the duodenum.sophagogastroduodenoscopy may be abbreviated to 'EGD' while panendoscopy is to 'PES'. It is also called 'upper GI endoscopy', 'gastroscopy' or simply 'endoscopy' (since it is the most commonly performed type of endoscopy, the ambiguous term 'endoscopy' refers to EGD by default).