Table 2:

Disease characteristics of patients with inflammatory bowel disease diagnosed with interval colon cancer (N=15)

Disease Characteristics	Value
Type of Inflammatory Bowel Disease
Ulcerative colitis, n (%)	10 (66.7)
Crohn’s disease, n (%)	5 (33.3)
Disease Extent (Ulcerative colitis)
Pancolitis, n (%)	10 (100.0)
Disease location (Crohn’s disease)
Colonic, n (%)	2 (40.0)
Ileocolonic, n (%)	3 (60.0)
Age of IBD diagnosis, mean (SD)	33.5 (11.3)
Primary Sclerosing Cholangitis, n (%)	1 (6.7)
Disease duration at CRC diagnosis, mean (SD)	21.1 (12.2)
Active disease at time of index colonoscopy, n (%)	12 (80.0)
Pseudopolyps on index colonoscopy, n (%)	3 (20.0)
Stricture on index colonoscopy, n (%)	1 (6.7)
Low-grade or indefinite dysplasia on colonoscopy prior to CRC diagnosis, n (%)	4 (26.7)
High-grade dysplasia on colonoscopy prior to CRC diagnosis, n (%)	1 (6.7)
Therapy at time of CRC diagnosis, n (%)
Anti-Tumor necrosis factor	4 (26.7)
Thiopurine	2 (13.3)
5-ASA	9 (60.0)
Prednisone	1 (26.7)
Previous maintenance medications, n (%)
Anti-Tumor necrosis factor	0 (0.0)
Thiopurine	4 (26.7)
5-ASA	4 (26.7)
Smoking, n (%)
Never	11 (73.3)
Past	4 (26.7)
Current	0 (0.0)