title: Pit pattern type analyses of colon polyps with high-resolution colonoscope.
abstract: OBJECTIVE
  Correlations among pit pattern types and some characteristics of colon polyps were assessed with high-resolution colonoscope in Turkish patients.
  
  
  METHODS
  Sixty-five patients were included in the study. All visible polyps and distal 30cm of colon were stained with indigo carmine 0.4% after standard colonoscopic examination. Then, pit pattern analyses were done. Correlations were evaluated and results were interpreted as significant if p < 0.05.
  
  
  RESULTS
  There were correlations among the pit pattern types of polyps and their size, location, morphology and histology. Adenomatous polyps (type III,IV,V) were mostly located in the right colon, nonadenomatous polyps (type I/II) were mostly in the left. Ratio of having adenomatous structure increased in a parallel course with increase in polyp's size. While most of the nonadenomatous polyps were with type I,II, adenomatous polyps were with type III, IV, V patterns. Most of the type II, III, IV polyps were sessile and type I polyps were flat. Sensitivity and specificity of adenomatous and nonadenomatous polyps were 80% and 89% respectively and overall accuracy rate was 87%. Type III/IV were the best estimated type among the others. After chromoendoscopy, 35% increase in polyp number was also detected.
  
  
  CONCLUSIONS
  High-resolution endoscope is successful for prediction of histology of colorectal polyps.
authors.affiliation: Gastroenterology Clinic, Haydarpasa Numune Education and Research Hospital, Istanbul, Turkey. alince@superonline.com
authors.forename: Ali Tüzün
authors.initials: AT
authors.lastname: Ince
authors.forename: Cengiz
authors.initials: C
authors.lastname: Bölükbas
authors.forename: Onder
authors.initials: O
authors.lastname: Peker
authors.forename: Fusun
authors.initials: F
authors.lastname: Bolükbas
authors.forename: Oya
authors.initials: O
authors.lastname: Ovünç
mesh_terms: D000328:Adult; D000368:Aged; D003111:Colonic Polyps / Q000473:pathology*; D020685:Colonoscopes; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity