An EUS (endoscopic ultrasound) is a test that is similar to gastroscopy and allows examination of the oesophagus (gullet), stomach and the duodenum (the first part of the small bowel) using a flexible gastroscope (camera). However, in EUS the gastroscope tip has a small ultrasound scanner in addition to a camera which enables examination of the lining of the gastrointestinal tract and of the structures and organs that lie in close proximity such as lymph nodes, bile ducts and pancreas. Download the EUS Patient Information Leaflet to find out more about the procedure including indications, preparation, the examination, potential risks and post procedural monitoring and advice. This procedure is performed in Royal Gwent Hospital (RGH) as an outpatient.