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Anatomical distribution and detection rate of colorectal neoplasms according to age in the colonoscopic screening of a Korean population

Annals of Surgical Treatment and Research
2018년 94권 1호 p.36 ~ p.43
이숙영 ( Lee Suk-Young ) - Korea University College of Medicine Department of Internal Medicine

송완희 ( Song Wan-Hee ) - Korea Medical Institute
오상철 ( Oh Sang-Cheul ) - Korea University College of Medicine Department of Internal Medicine
민병욱 ( Min Byung-Wook ) - Korea University College of Medicine Department of Surgery
이순일 ( Lee Sun-Il ) - Korea University College of Medicine Department of Surgery

Abstract

Purpose: Because data as a basis for the determination of proper age and modality for screening of colorectal neoplasms is lacking, we evaluated detection rates and anatomical distribution of colorectal neoplasms according to age in healthy individuals who underwent total colonoscopy for health checkup.

Methods: A total of 16,100 cases that had received the colonoscopic examination from January to December in 2014 were analyzed. The total number of individuals who received total colonoscopy were divided by the number of individuals harboring colorectal adenoma to calculate the detection rate of colorectal adenoma. Individuals ≤50 years old were classified as young-age group and aged >50 were old-age group. Differences in anatomical locations of colorectal neoplasms were analyzed in the 2 age groups by chi-square test. Risk factors for colorectal adenoma in each age group were analyzed using univariate and multivariate logistic regression analyses.

Results: Detection rates of colorectal adenoma were 13.7% in all cases and 12.8% for those in their 40′s. The main anatomical location of colorectal adenoma was proximal colon in both age groups (P < 0.001). Hyperplastic polyp was mainly distributed to the distal colon in both age groups (P < 0.001). Distal colon was the major site for colorectal cancer in the old-age group (P = 0.001). Proximal location of neoplasms was a risk factor for colorectal adenoma in both age groups with multivariate analysis.

Conclusion: These data could be the bases for earlier initiation of screening for colorectal neoplasms with total colonoscopy to detect clinically significant colorectal polyps.

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SCI(E) 학술진흥재단(KCI) KoreaMed 대한의학회 회원 
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