The direct visualization of the esophagus (food pipe), stomach and part of the small intestine using an endoscope. This procedure is useful in identifying bleeding sites, polyps, varices (enlarged veins) and foreign bodies.

An endoscopic examination of the large intestine from the rectum to the ileo-cecal valve using a colonoscope. This procedure is used for cancer screening as well as for identifying bleeding sites, polyps, and inflammation

A condition in which the cells of the lower esophagus (food pipe) become damaged due to repeated exposure to stomach acid and can increase the chance for esophageal cancer.

A disease in which a person cannot tolerate gluten, a protein found in wheat, barley and rye. As a result, the small intestine becomes damaged, interfering with the absorption of nutrients from food.