title: Growth of colorectal polyps: recovery and evaluation of unresected polyps of less than 10 mm, 1 year after detection.
abstract: METHODS
  Colonoscopic 1-year control of polyps of less than 10 mm left in situ was carried out in 103 (89%) of 116 originally examined patients.
  
  
  RESULTS
  Analysis showed an 85% recovery: 91% and 81% for polyps of 5-9 mm and < 5 mm, respectively. The recovery was significantly related to size and localization, whereas the growth rate was inversely correlated to the originally measured diameter. A linear relationship was demonstrated between anus-to-polyp distances 1 year apart, with a normalized agreement index of 0.70. In only 1 of 189 polyps, an increase of diameter to > 10 mm was demonstrated. The 79 new polyps in 52 (50%) of the patients were significantly smaller, more often right-sided, and related to multiplicity of polyps at the initial examination but not to growth of recovered polyps or cleansing status.
  
  
  CONCLUSIONS
  An acceptable recovery and growth rate of polyps < 10 mm seems to justify the continuation of the study for the remaining 2 years.
authors.affiliation: Medical Dept, Ullevål Hospital, Oslo, Norway.
authors.forename: B
authors.initials: B
authors.lastname: Hofstad
authors.forename: M
authors.initials: M
authors.lastname: Vatn
authors.forename: S
authors.initials: S
authors.lastname: Larsen
authors.forename: M
authors.initials: M
authors.lastname: Osnes
mesh_terms: D000368:Aged; D015179:Colorectal Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D007417:Intestinal Polyps / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D013997:Time Factors