<prompt> Upper GI endoscopy is indicated in all, except:Peptic ulcerationAchalasia cardiaBarretts esophagusCorrosive ingestion delayed phase  <response>: Ans. d Corrosive ingestion delayed phaseRef: Bailey and Love 26th Edition, Page 994 For corrosive ingestion endoscopy must be planned in early; phase within 48 hours Endoscopy beyond 48 hours has more chances of perforation Achalasia cases before endoscopy must be aspirated by Ryles tube in mediastinum 