What is ulcerative colitis? Ulcerative colitis (UC) is an inflammatory bowel disease (IBD) that causes inflammation and ulcers in the large intestine. Crohn’s disease is another form of IBD that can affect the entire gastrointestinal tract or gut, extending from the esophagus to the anus. Who gets

What is upper endoscopy? Upper endoscopy lets your doctor examine the lining of the upper part of your gastrointestinal tract, which includes the esophagus, stomach and duodenum (first portion of the small intestine). Your doctor will use a thin, flexible tube called an endoscope, which has its own