You will see the video clips of esophago-gastro- duodinoscopyrnEsophagoGastroDuodinoscopy requires special training and considerable experience but affords valuable information.rnBy its implement the whole of the interior of the stomach as well as esophagus, the first part and the proximal section of the second part of the duodenum and both efferent and afferent loops of the gastrojujenostomy if present can be scrutinized. rnGastroscopy is valuable in the diagnosis of gastric ulcers, in checking the results of medical treatment of chronic gastric ulcer. Gastroduodinoscopy is valuable in differential diagnosis between chronic peptic ulcer and gastric carcinoma, in diagnosis of small gastric neoplasm, in the detection of certain forms of gastritis, in examination of a stoma, in cases of gastrojujenostomy, in cases of duodinitis and duodenal ulcer.rn Less