Crohn’s colitis (granulomatous colitis)
Crohn’s colitis affects only the colon. Symptoms of this type of Crohn’s disease include diarrhea, rectal bleeding, skin lesions, joint pain, and the formation of fistulas, ulcers, and abscesses around the anus. Around 30-45% of individuals with Crohn’s colitis have granulomas. Granulomas are small areas of inflamed tissue. It may be difficult to differentiate between Crohn’s colitis and ulcerative colitis because they tend to trigger similar symptoms. It has been found that individuals with Crohn’s colitis are at an increased risk of developing colorectal cancer.