A birth defect in which some nerve cells are lacking in the large intestine, causing the intestine not to move stool and become blocked. It causes the abdomen to swell. See megacolon.

One or more flaps of tissue between the lower part of the small intestine (ileum) and the upper part of the large intestine (cecum).

A reaction to a food, drug, or other substance.

A thin tube with a tiny video camera attached that is used to look inside the body to view the surface of organs. See endoscope

An obstruction of lymph drainage from the small intestine causing malabsorption.

Abbreviation for nonalcoholic steatohepatitis.

The study of how normal physiological processes are altered by disease.

The space behind the mouth that serves as a passage for food from the mouth to the esophagus and for air from the nose and mouth to the larynx, or voice box.

Medicines that stop the stomach

A mixture of water, protein, and salts produced in the mouth that makes food easy to swallow and begins the process of digestion.