Korean J Gastrointest Endosc.  2010 Oct;41(4):201-207.

Associations between Nonalcoholic Fatty Liver Disease and Colorectal Adenoma in Health Screen Examinees

Affiliations
  • 1Department of Internal Medicine, Bundang Jesaeng Hospital, Daejin Medical Center, Seongnam, Korea. sj0816@dmc.or.kr
  • 2Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
  • 3Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea.

Abstract

BACKGROUND/AIMS
Nonalcoholic fatty liver disease (NAFLD) and colorectal cancer share several risk factors. However the relationship between NAFLD and colorectal adenoma is unclear. Therefore, we investigated the possibility of an association between NAFLD and colorectal adenoma.
METHODS
We reviewed the records of 3,106 subjects who had undergone colonoscopy and abdominal ultrasonography between April 2007 and August 2009.
RESULTS
The sex ratio (male/female) was 4.94:1 and the mean age was 50.6+/-9.7 years in patients with colorectal adenoma; the corresponding numbers were 2.23: 1 and 45.0+/-9.2 years in patients without colorectal adenoma (p<0.001). The prevalence of NAFLD was 26.0% in the adenoma group and 21.4% in the control group (p=0.013). Additionally, there were positive associations between colorectal adenoma and BMI and lipid profile. Among the risk factors selected by univariate analysis, older age (OR 2.592; 95% CI 2.087~3.219), and being male (OR 2.470; 95% CI 1.878~3.247) were independent risk factors for colorectal adenoma. Patients with NAFLD had more colorectal adenomas (p=0.005) and their adenomas were located more in the proximal colon (p=0.009).
CONCLUSIONS
NAFLD is not associated with increased risk for colorectal adenoma. However, among patients with NAFLD, colorectal adenomas were likely to be increased in number and they were likely to be located in the proximal colon.

Keyword

Colorectal adenoma; Nonalcoholic fatty liver disease
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