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Dis Colon Rectum. 2008 May;51(5):593-7. doi: 10.1007/s10350-007-9184-1. Epub 2008 Jan 25.

Insulin therapy and colorectal adenoma risk among patients with Type 2 diabetes mellitus: a case-control study in Korea.

Author information

1
Department of Gastroenterology, Hallym University Sacred Heart Hospital, Anyang, South Korea.

Abstract

PURPOSE:

Patients with Type 2 diabetes mellitus may be at increased colorectal adenoma and cancer risk. Moreover, chronic insulin therapy may increase the risk of colorectal cancer among patients with Type 2 diabetes mellitus. We investigated to determine whether insulin therapy might increase the risk of colorectal adenoma among clinically confirmed patients with Type 2 diabetes mellitus.

METHODS:

We conducted a retrospective study among patients with Type 2 diabetes mellitus who underwent total colonoscopy between January 2003 and July 2006 at Hallym University Sacred Heart Hospital. Among them (n = 325), patients with histologically confirmed colorectal adenomas (n = 100) and the same number of controls matched by age and sex were selected and analyzed.

RESULTS:

Adenoma cases showed significantly higher rate of chronic insulin therapy (more than 1 year) than controls (P = 0.018). In multivariate regression analysis, patients who received chronic insulin therapy had three times the risk of colorectal adenoma compared with patients who received no insulin (odds ratio, 3; 95 percent confidence interval, 1.1-8.9; P = 0.04).

CONCLUSIONS:

Chronic insulin therapy was associated with increased colorectal adenoma risk among Type 2 diabetes mellitus patients. This result may provide a need for more intensive colorectal cancer screening program in patients with Type 2 diabetes mellitus, especially those who receive chronic insulin therapy.

PMID:
18219529
DOI:
10.1007/s10350-007-9184-1
[Indexed for MEDLINE]

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