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Tree diagram for 22 colonic diseases (Ward's method euclideandistances). Four different clusters can be identified: 1 and 3 are IBD-related clusters containing one CRC case; 2 is a carcinoma group containing one adenoma and one ulcerative colitis cases; 4 is an adenoma cluster with nine adenoma cases. AD: Adenoma; CD: Crohn’s disease; CRC: Colorectal cancer; UC: Ulcerative colitis.
