FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY FRANCOIS L'HOPITAL, ISM / SCIENCE PHOTO LIBRARY
Colon in Crohn's disease. Endoscope view of ulceration in the descending colon of a patient with Crohn's disease (regional enteritis). Crohn's disease causes inflammation, thickening, and ulceration of the intestinal tract. Its cause is unknown. Symptoms include abdominal pain, diarrhoea and weight loss.
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