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risk factors for colon cancer in patients with ulcerative colitis
Increased risk:
1) primary sclerosing cholangitis
2) extent & duration of ulcerative colitis
3) family history of colorectal cancer
4) endoscopically abnormal colon
- pseudoployps, scarring
Reduced risk:
1) anti-inflammatory agents, particulary 5-amino salicylates
- NSAIDS, glucocorticoids
2) smoking
3) ursodeoxycholic acid in patients with primary sclerosing cholangitis
No effect on risk:
- immunomodulatory agents
- azathioprine, 6-mercaptopurine
General
risk factors for cancer
References
- Velayos, FS et al,
Predictive and protective factors associated with colorectal
cancer in ulcerative colitis. A case-control study
Gastroenterology 2006; 130:1941
PMID: 16762617