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An endoscope or fibrescope is a long, usually flexible tube with a lens at one end and a video camera at the other.

Tumours can begin anywhere in the stomach, although most start in the stomach’s inner lining.

The oesophagus is part of the upper gastrointestinal (GI) tract, which is a section of the digestive system.

Most stomach ulcers are caused by infection or medication, not stress or poor diet.

Gastritis, inflammation of the stomach lining, may be caused by many factors including infection, alcohol, particular medications and some allergic and immune conditions.

Symptoms of Barrett's oesophagus are similar to regular heartburn, which means many people don't seek treatment until their condition is quite advanced.

Non-surgical procedures are used to diagnose, measure or treat problems such as disease or injury

Barium tests are used to examine conditions of the digestive tract such as reflux, narrowing or ulceration.

A gastroenterologist is a physician who treats diseases and conditions related to the digestive system and intestines.

The symptoms of stomach cancer are usually vague and can be common to other medical conditions.