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A finding of a 30%\u201350% synchronous rate has been observed. After clearing of the colon of all adenomas, follow\u2010up examination will reveal a 30%\u201350% rate of metachronous adenomas, but usually with unimportant pathology. Patients with no special concerns at initial polypectomy can have surveillance at intervals of approximately 3 years, while those with an incompletely cleared colon, numerous polyps, or large sessile or malignant adenomas need individualized surveillance. Working guidelines can be provided at this time pending observations in ongoing trials. It is expected but not yet proven that control of colonic adenomas will reduce the incidence and mortality from colorectal cancer. Further research into the biology of adenomas and cancer will undoubtedly provide a clear understanding of susceptibility for colorectal adenomas and more selective control strategies<\/jats:bold>.<\/jats:p>","DOI":"10.1007\/bf01658956","type":"journal-article","created":{"date-parts":[[2005,5,8]],"date-time":"2005-05-08T18:16:37Z","timestamp":1115576197000},"page":"25-28","source":"Crossref","is-referenced-by-count":11,"title":["Follow\u2010up after polypectomy"],"prefix":"10.1002","volume":"15","author":[{"given":"Sidney J.","family":"Winawer","sequence":"first","affiliation":[{"name":"Gastroenterology Service Memorial Sloan\u2010Kettering Cancer Center New York New York USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[1991,1]]},"reference":[{"key":"e_1_2_1_2_1","volume-title":"Basic and Clinical Perspectives of Colorectal Polyps and Cancer","author":"Steele G.","year":"1988"},{"key":"e_1_2_1_3_1","first-page":"43","volume-title":"The management of patients with colorectal adenomas","author":"Lambert R.","year":"1984"},{"key":"e_1_2_1_4_1","volume-title":"International Histological Classification of Tumors","author":"Jass J.R.","year":"1989"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-5085(90)90827-N"},{"key":"e_1_2_1_6_1","unstructured":"Morson B.C. 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