Crohn’s & Colitis Glossary

Ulcer

A break in the skin or lining of the GI tract. In Crohn’s disease, ulcers can occur anywhere between the mouth and the anus. In ulcerative colitis, ulcers occur in the colon.

Ultrasound

An imaging test in which high-frequency sound waves, not heard by the human ear, are transmitted through body tissues using a transducer, relaying pictures to a computer for display.

Upper endoscopy

A procedure that uses a small endoscope with a light and camera inserted down your throat to look inside the esophagus, stomach, and first part of the small intestine.