Details.
Visualisation of the oesophagus, stomach and duodenum using a flexible telescope. Performed under sedation, typically administered by an anaesthetist. Indications include difficult-to-manage or chronic acid reflux, stomach discomfort, iron deficiency or anaemia, diarrhoea, exclusion of coeliac disease or gastric cancer, and a family history of upper gastrointestinal cancers. General practitioners may refer patients directly.