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Gastroenterology. 1995 May;108(5):1405-11.

Screening reduces colorectal cancer rate in families with hereditary nonpolyposis colorectal cancer.

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  • 1Second Department of Surgery, Helsinki University Central Hospital, Finland.

Abstract

BACKGROUND/AIMS:

The inherited susceptibility to hereditary nonpolyposis colorectal cancer (HNPCC) provides an opportunity for secondary prevention of colorectal cancer (CRC) in family members who are at 50% lifetime risk. The aim of this study was to evaluate the effectiveness of long-term screening during a 10-year period.

METHODS:

The CRC and death rates were compared between two groups of asymptomatic at-risk members of 22 families with HNPCC: 133 subjects screened at 3-year intervals by colonoscopy or barium enema and sigmoidoscopy and 118 control subjects without screening. The screening was complete in 118 subjects (89%), whereas 18 control subjects (15%) had screening examinations outside of the study.

RESULTS:

CRC occurred in 6 study subjects (4.5%) and in 14 controls (11.9%; P = 0.03), a difference of 7.4% in favor of the study group, which corresponds to a reduction by 62% that is presumably because of polypectomies. The tumor stage was more favorable in the screening group with no deaths caused by CRC compared with 5 of 14 cases in controls. Overall, there were 6 and 12 deaths within the 10-year period in the study and control groups, respectively (P = 0.08).

CONCLUSIONS:

The 3-year interval screening more than halves the CRC rate in at-risk members of families with HNPCC and seems to prevent CRC deaths.

Comment in

PMID:
7729632
[PubMed - indexed for MEDLINE]
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