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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.

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

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

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

When people with inflammatory bowel disease (Crohn's disease and ulcerative colitis) are not experiencing a flare-up of their illness, they feel quite well and are often free of symptoms.

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

The type of pain felt in the abdomen can vary greatly.