Crohn's disease and ulcerative colitis are two medical disorders that fall under the umbrella of "inflammatory bowel disease." A collection of intestinal conditions known as inflammatory bowel disease (IBD)

Inflammatory bowel disease may cause growth of polyps and pseudo-polyps

No. While patients of some inflammatory bowel diseases can be more susceptible to cancer it is not the same disease. Inflammatory disease is a chronic inflammation of the bowel. Cancer is unregulated cell growth anywhere in the body.

Cohn's Disease is a type of inflammatory bowel disease.

Timothy R. Orchard has written:

'Inflammatory bowel disease' -- subject(s): Inflammatory Bowel Diseases, Atlases, Inflammatory bowel diseases