title: [Clinicopathologic study of colorectal polyps and obesity in Korean adult].
abstract: OBJECTIVE
  Obesity is a rising problem in industrialized countries. Numerous epidemiologic studies have shown a positive association between obesity and colorectal polyps. There are few studies investigating the association between colorectal adenomatous polyps and body fat composition in Korea. We tried to examine the relationship between body fatness and colorectal adenomatous polyps in health check-up subjects in Korea.
  
  
  METHODS
  Six thousand seven hundred and six routine health check-up subjects, who visited our hospital between March 2002 and April 2005 and underwent distal colon examimation with sigmoidoscopy, were enrolled in this study. Among them, colonoscopy was done in 860 patients to evaluate the entire colon. We tried to reveal the relationship between body mass index (BMI) and size, location, number and histopathological type of polyps. BMI was used as an indicator of obesity.
  
  
  RESULTS
  The mean value of BMI in total polyp-free group (23.8+/-2.9) was not different from that of the polyp group (24.5+/-2.8, p=0.09). The frequency of rectosigmoid polyps in obese patients (20.4%) was higher than that in non-obese patients (16.0%, p<0.05). The frequency of adenomatous polyp was not different between obese and non-obese group. Number of polyps (> or=4) correlated well with obesity. Moreover, age and triglyceride level in patients with colonic adenoma were significantly higher than in patients without colonic adenom.
  
  
  CONCLUSIONS
  This study shows that obesity is not associated with colonic adenomatous polyp in Korean population. However, we observed that obesity may be associated with rectosigmoid colon polyps. Furthermore, age and triglyceride level might be the risk factors of colonic adenomatous polyps in Korean population.
authors.affiliation: Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul.
authors.forename: Jeong Hoon
authors.initials: JH
authors.lastname: Ji
authors.forename: Bum Joon
authors.initials: BJ
authors.lastname: Park
authors.forename: Young Soo
authors.initials: YS
authors.lastname: Park
authors.forename: Jin-Hyeok
authors.initials: JH
authors.lastname: Hwang
authors.forename: Sook Hyang
authors.initials: SH
authors.lastname: Chung
authors.forename: Nayoung
authors.initials: N
authors.lastname: Kim
authors.forename: Dong Ho
authors.initials: DH
authors.lastname: Lee
authors.forename: Hyun Chae
authors.initials: HC
authors.lastname: Jung
authors.forename: In Sung
authors.initials: IS
authors.lastname: Song
mesh_terms: D018256:Adenomatous Polyps / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015992:Body Mass Index; D003110:Colonic Neoplasms / Q000150:complications* / Q000453:epidemiology / Q000473:pathology; D003111:Colonic Polyps / Q000150:complications / Q000453:epidemiology / Q000473:pathology; D015897:Comorbidity; D005260:Female; D006801:Humans; D007723:Korea; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000150:complications* / Q000175:diagnosis / Q000453:epidemiology; D012189:Retrospective Studies; D012812:Sigmoidoscopy