Glossary U

U

Ulcerative colitis

A form of inflammatory bowel disease that causes ulcers and inflammation in the inner lining of the colon and rectum.

Ultrasound

An imaging method in which high-frequency sound waves are used to outline a part of the body.

Upper endoscopy

Examination of the inside of the esophagus, stomach, and duodenum using an endoscope.

Upper GI series

X-rays of the esophagus, stomach, and duodenum.