Crohn’s disease

Crypt abscess

A crypt abscess is a collection of specialized immune cells called neutrophils inside the colon. It is an example of acute inflammation and is often seen in a condition called active colitis. What does this look like under the microscope? The inside of the colon is covered by epithelial cells that connect to form structures …
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Chronic active colitis

Chronic active colitis is a condition where immune cells attack and damage cells on the inside of the colon. It is a pattern of injury that can be seen in inflammatory bowel disease (IBD) including Crohn’s disease and ulcerative colitis. What are the symptoms of chronic active colitis? Inflammation in the colon damages the cells …
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