Barrett's Esophagus

Glossary of Terms

D - E

Diaphragm
A dome shaped muscle that separates the lungs and heart from the abdomen. This muscle assists in breathing.
DNA (deoxyribonucleic acid)
The part of every cell that carries all genetic information.
Dysplasia
A precancerous condition in which cells which are very similar to cancer cells grow in an organ but have not yet acquired the ability to invade into tissue or metastasize (spread to areas distant from where they started). This is a stage which can be cured.
-ectomy
Surgical removal of a structure or part of a structure. For example, pancreatectomy is the surgical removal of the pancreas (or a portion of it), and esophagectomy is removal of the esophagus.
Endoscopy
A procedure whereby a flexible fiber-optic tube is inserted into the esophagus, stomach or small intestine through the mouth (upper endoscopy) or into the large intestine through the anus (lower endoscopy) to look for abnormalities.
Esophagus
The hollow tube leading from the mouth to the stomach.