Hepato-gastroenterology · 2001
The interval between flexible sigmoidoscopy screening examinations can be expanded beyond five years.
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Yoshinaga M, Watabe R, Yanagisawa J, Harada N, Motomura S, Nawata H, Ikeda K
Аннотация
BACKGROUND/AIMS: As one of the methods for colorectal cancer screening, asymptomatic average-risk persons aged > or = 50 years are recommended to undergo flexible sigmoidoscopy screening every 5 years. We evaluate whether the interval between examinations can be extended beyond 5 years.
METHODOLOGY: A total of 192 asymptomatic average-risk subjects were studied, all of whom had undergone a initial negative examination on a flexible sigmoidoscopy screening at age > or = 50 years and a second examination at least 3 years later. The study population was divided into three groups according to the interval between examinations, which was 3-5 years in Group A, 5-6 years in Group B, and 6-8 years in Group C.
RESULTS: The incidence of neoplasms was compared among the three subjects groups, and it was found to be similar: 11/96 (11.5%) in group A, 4/55 (7.3%) in group B, and 5/41 (12.2%) in group C. All detected adenomas were less than 10 mm in diameter, and none contained a villous component or high-grade dysplasia. No cancers were found in the study.
CONCLUSIONS: The results suggest that the interval for screening sigmoidoscopy may be extended beyond 5 years in persons showing negative results on an initial examination.
METHODOLOGY: A total of 192 asymptomatic average-risk subjects were studied, all of whom had undergone a initial negative examination on a flexible sigmoidoscopy screening at age > or = 50 years and a second examination at least 3 years later. The study population was divided into three groups according to the interval between examinations, which was 3-5 years in Group A, 5-6 years in Group B, and 6-8 years in Group C.
RESULTS: The incidence of neoplasms was compared among the three subjects groups, and it was found to be similar: 11/96 (11.5%) in group A, 4/55 (7.3%) in group B, and 5/41 (12.2%) in group C. All detected adenomas were less than 10 mm in diameter, and none contained a villous component or high-grade dysplasia. No cancers were found in the study.
CONCLUSIONS: The results suggest that the interval for screening sigmoidoscopy may be extended beyond 5 years in persons showing negative results on an initial examination.