Colon CT Appearances

Ulcerative Colitis CT Findings

• Involves the large bowel, usually begins in the rectum
• Extensive ulceration and diffuse inflammation of the mucosa
• May have a granular mucosal pattern, mural thickening, luminal narrowing
• Rectal narrowing and widening of presacral space indicate chronic UC

Other Information About Ulcerative Colitis

Etiology:

• Unknown

Epidemiology:

• Bimodal: usually diagnosed at age 15-30 and 50-70

Presentation:

• Bloody diarrhea

Prognosis:

• Chronic disease
• Generally no increase in mortality