Table 2.

Absolute Risk of Selected Cancers occurring 1–11 years following a diagnosis of Inflammatory Bowel Diseases (IBD), Denmark, 1978–2010

	Crohn’s disease (n=13,756) Absolute risk percent (95%CI)	Ulcerative colitis (n=35,152) Absolute risk percent (95%CI)
Any invasive cancer	5.6 (5.1–6.1)	6.3 (6.0–6.6)
Any gastrointestinal cancer	1.2 ((1.0–1.4)	1.4 (1.2–1.6)
Colorectal cancer	0.6 (0.4–0.8)	0.8 (0.7–0.9)
Small intestine cancer	0.07 (0.03–0.15)	0.03 (0.01–0.06)
Other GI cancers	0.5 (0.4–0.7)	0.6 (0.5–0.7)
Any extra-intestinal cancer	4.4 (4.0–4.9)	5.0 (4.7–5.3)
Hematological malignancies	0.7 (0.5–0.9)	0.4 (0.3–0.5)
Smoking related cancers	1.3 (1.1–1.5)	1.3 (1.2–1.5)
Female reproductive cancers	0.9 (0.7–1.1)	1 2 (1.1–1.3)
Other common cancer sites
Prostate	0.4 (0.3–0.5)	0.7 (0.6–0.8)
Lung	0.9 (0.7–1.1)	0.8 (0.7–1.0)
Bladder	0.2 (0.1–0.3)	0.4 (0.3–0.4)
Melanoma	0.3 (0.2–0.5)	0.3 (0.2–0.4)
Breast	0.8 (0.6–1.0)	1.0 (0.8–1.1)
Uterus	0.07 (0.03–0.14)	0.1 (0.1–0.2)
Non-melanoma skin cancer	2.2 (1.9–2.5)	3.1 (2.9–3.3)