References
- Konishi F, Morson BC. Pathology of colorectal adenomas:a colonoscopic survey. J Clin Pathol 1982; 35: 830–41
- Hermanek P. Dysplasia-carcinoma sequence, types of adenomas and early colorectal carcinoma. Eur J Surg Oncol 1987; 13: 141–3
- Tierney R P, Ballantyne G H, Modlin IM. The adenoma to carcinoma sequence. Surg Gynecol Obstet 1990; 171: 81–94
- Vatn M H, Stalsberg H. The prevalence of polyps of the large intestine in Oslo:an autopsy study. Cancer 1982; 49: 819–25
- Rickert R R, Auerbach O, Garfinkel L, Hammond E C, Frasca JM. Adenomatous lesion of the large bowel. An autopsy survey. Cancer 1979; 43: 1847–57
- DiSario J A, Foutch P G, Mai H D, Pardy K, Manne RK. Prevalence and malignant potential of colorectal polyps in asymptomatic, average-risk men. Am J Gastroenterol 1991; 86: 941–5
- Brendler S J, Watson R D, Katon R M, Parsons M E, Howatt JL. Skin tags are not a risk factor for colorectal polyps. J Clin Gastroenterol 1989; 11: 299–302
- Gupta T P, Jaszewski R, Luk GD. Efficacy of screening flexible sigmoidoscopy for colorectal neoplasia in asymptomatic subjects. Am J Med 1989; 86: 547–50
- Mullins R J, Whitworth P W, Polk H CJ. Screening before surgery for colon neoplasms with a flexible sigmoidoscope by surgical residents. Ann Surg 1987; 205: 659–64
- Bech K, Kronborg O, Fenger C. Adenomas and hyperplastic polyps in screening studies. World J Surg 1991; 15: 7–13
- Winawer S J, O'Brien M J, Waye J D, et al. Risk and surveillance of individuals with colorectal polyps. WHO Collaborating Centre for the Prevention of Colorectal Cancer. Bull WHO 1990; 68: 789–95
- Stryker S J, Wolff B G, Culp C E, Libbe S D, Ilstrup D M, Mac-Carty RL. Natural history of untreated colonic polyps. Gastroenterology 1987; 93: 1009–13
- Kronborg O, Fenger C, Olsen J, Bech K, Sondergaard O. Repeated screening for colorectal cancer with fecal occult blood test. A prospective randomized study at Funen, Denmark. Scand J Gastroenterol 1989; 24: 599–606
- Fenger C, Bak M, Kronborg O, Svanholm H. Observer reproducibility in grading dysplasia in colorectal adenomas: comparison between two different grading systems. J Clin Pathol 1990; 43: 320–4
- Mantel N, Haenszel W. Statistical aspects of the analysis of data from retrospective studies of disease. J Natl Cancer Inst 1959; 22: 719–48
- Cochran WG. Some methods for strengthening the common Ĉ2-tests. Biometrics 1954; 10: 417–41
- Stepwise logistic regression. BMDP statistical software manual, L. Engelman, W J Dixon. University of California Press, Berkeley, Calif. 1988; 941–68
- St-John DJ. Faecal occult blood tests: a critical review. Screening for colorectal cancer. Proceedings of an international meeting., J D Hardcastle. Normed Verlag, Bad Homburg 1992; 54–8
- O'Brien M J, Winawer S J, Zauber A G, et al. The National Polyp Study. Patient and polyp characteristics associated with high-grade dysplasia in colorectal adenomas. Gastroenterology 1990; 98: 371–9
- Cappell M S, Forde KA. Spatial clustering of multiple hyperplastic, adenomatous, and malignant colonic polyps in individual patients. Dis Colon Rectum 1989; 32: 641–52