title: Serrated polyps detected during screening colonoscopies.
abstract: OBJECTIVE
  It is estimated that between 15% and 35% of sporadic colorectal cancers (CRC) developing from adenomas come from serrated polyps. Currently, the most effective method used to prevent CRC is the removal of adenomas, including serrated polyps, during colonoscopy. The aim of this paper is to analyze the changes characterized as serrated polyps and detected during screening colonoscopies performed as part of the Screening Program for Early Colorectal Cancer Detection (SPED).
  
  
  METHODS
  In our center, as part of the nationwide SPED between 2000 and 2009, 1,442 screening colonoscopies were performed.
  
  
  RESULTS
  Serrated polyps were found in 11.9% of all patients and in 45.8% of patients who had polyps removed by endoscopy. In screening colonoscopy of the large intestine, the following polyps were found most frequently: hyperplastic, < 1 cm, without a stalk, multiple, located in the distal part of the large intestine, in men and in patients with a first-degree relative with a history of abdominal cancer. Detecting and removing polyps was facilitated by the fact that the cecum was intubated and the bowel preparation had been performed either very well or well. The detection rate of serrated polyps was not influenced by patients' place of residence or their age.
  
  
  CONCLUSIONS
  Serrated polyps constitute a frequent, and very frequent among removed polyps, abnormality detected during screening colonoscopy.
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Maciej
authors.initials: M
authors.lastname: Swiątkowski
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Meder
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Lesław
authors.initials: L
authors.lastname: Sobczyński
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Jarosław
authors.initials: J
authors.lastname: Koza
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Szamocka
authors.affiliation: Chair and Department of Gastroenterology, Vascular and Internal Diseases, Nicolaus Copernicus University, Ludwik Rydygier Collegium Medicum in Bydgoszcz, Poland.
authors.forename: Janina
authors.initials: J
authors.lastname: Brudny
authors.affiliation: Division of Pathomorphology, Dr Jan Biziel University Hospital No. 2 in Bydgoszcz, Poland.
authors.forename: Jadwiga
authors.initials: J
authors.lastname: Korenkiewicz
keywords: adenomas; colorectal cancer; screening colonoscopy; serrated polyps