Original ArticleClinical EndoscopyColorectal neoplasm in asymptomatic Asians: a prospective multinational multicenter colonoscopy survey
Section snippets
Subjects
This was a pilot study to investigate the findings of colonoscopy in asymptomatic Asian subjects. We set out to conduct a prospective, multinational, multicenter study by using a database designed by the Asia Pacific Working Group for Colorectal Cancer. We aimed to include consecutive asymptomatic subjects above the age of 16 years, who were undergoing colonoscopy as a screening procedure referred to 17 centers from 11 Asian cities (Bangkok, Guangzhou, Hong Kong, Jakarta, Kuala Lumpur, Manila,
Characteristics of study population
From July 2004 to December 2004, a total of 7290 subjects underwent a colonoscopy in the 17 participating centers. There were 860 asymptomatic adults who underwent colonoscopy and were analyzed in this study. Among them, 471 were men (54.8%). The mean age (±SD) was 54.4 ± 11.6 years (range, 20-90 years). In this cohort, 565 subjects (65.7%) were 50 years or older. There were 9 ethnic groups (Chinese, Indian, Indonesian, Japanese, Korean, Malay, Filipino, Thai, and white); Korean and Chinese
Discussion
In the present study, overall colorectal neoplasm and advanced neoplasm among asymptomatic Asians were found in 18.5% and 4.5% of the studied subjects, respectively. These rates appear to be numerically lower than those observed in Western studies, in which the prevalence of overall colorectal neoplasm ranged from 20.4% to 37.5% and that of advanced neoplasm ranged from 4.9% to 10.5%.8, 11, 12 However, the figures of colonic neoplasms and advanced neoplasms are very compatible with a recent
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Cited by (0)
This study was sponsored by the Asia Pacific Society of Digestive Endoscopy.