. It may provide a visual diagnosis (e.g. ulceration , polyps ) and grants the opportunity for biopsy or removal of suspected lesions, a totally non-invasive medical test. ESOPHAGOGASTRODUODENOSCOPY Endoscopic still of esophageal ulcers seen after banding of esophageal varices , at time of esophagogastroduodenosocopy (SEE PICTURE) . In medicine (