<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-0011</journal-id>
<journal-title><![CDATA[Revista de la Facultad de Medicina]]></journal-title>
<abbrev-journal-title><![CDATA[rev.fac.med.]]></abbrev-journal-title>
<issn>0120-0011</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-00112017000300433</article-id>
<article-id pub-id-type="doi">10.15446/revfacmed.v65n3.49484</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Results of total colonoscopy in the diagnosis of polyps. Case studies in Villavicencio, Colombia]]></article-title>
<article-title xml:lang="es"><![CDATA[Resultados de colonoscopia total en el diagnóstico de pólipos. Análisis de casos presentados en Villavicencio, Colombia]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Melo-Peñaloza]]></surname>
<given-names><![CDATA[Mauricio Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Cooperativa de Colombia Faculty of Medicine ]]></institution>
<addr-line><![CDATA[Villavicencio ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2017</year>
</pub-date>
<volume>65</volume>
<numero>3</numero>
<fpage>433</fpage>
<lpage>439</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-00112017000300433&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-00112017000300433&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-00112017000300433&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Any elevation above the normal plane of the colonic mucosa is considered a polypoid projection. As age increases, polyps are more likely to be found; in addition, polyps larger than 1 cm of diameter may potentially lead to a malignant neoplasm.  Objective: To establish the frequency, size, location and age groups of colonic polyp lesions in patients who underwent colonoscopy at Hospital Departamental in Villavicencio during 2009-2014.  Materials and methods: The results of 411 diagnostic colonoscopies were analyzed. Data collection and statistical description was done using SPPSS 2011 software.  Results: 43 (11%) polyps were smaller than 1cm; 16 (4%) were between 1cm and 2cm long; no polyps larger than 2cm were found, and the remaining results did not show any abnormality. Polyps were found in all segments of the colon in the 41-50 age group, but the highest percentage (11%) was observed in the 71-80 age group. 68.7% ofpolyps larger than 1cm and 67% smaller than 1cm were found in the left colon.  Conclusion: In population groups under 40 years of age, the incidence of polyps is low in the left colon and very low in the right colon.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción. Cualquier levantamiento por encima del plano normal de la mucosa colónica es considerada proyección polipoidea. A mayor edad es más probable encontrar pólipos; además, los &gt;1 cm de diámetro tienen mayor potencial de desarrollar neoplasia maligna.  Objetivo. Establecer la frecuencia de lesiones polipósicas del colon, su tamaño, su localización y los grupos de edades donde están presentes en pacientes a quienes se les realizó colonoscopia en el Hospital Departamental de Villavicencio en el periodo 2009-2014.  Materiales y métodos. Se analizaron los resultados de 411 colonoscopias diagnósticas. La recolección de datos y descripción estadística se hizo con el software SPPSS 2011.  Resultados. Del total de la muestra, 43 (10.46%) pólipos fueron &lt;1cm de diámetro, 16 (4% 3.89%) estuvieron entre 1cm y 2cm, no se encontraron pólipos &gt;2cm y en el resto de resultados no se hallaron estas anomalías. En el grupo de edad de 41 a 50 años se presentaron pólipos en todos los segmentos del colon, pero el de mayor porcentaje (11%) fue el de 71 a 80 años. En el colon izquierdo se presentó el 69% de los pólipos &gt;1cm y el 67% de los &lt;1cm.  Conclusión. En grupos de poblaciones &lt;40 años de edad, los hallazgos de pólipos son bajos en colon izquierdo y muy bajos en colon derecho.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Colonoscopy]]></kwd>
<kwd lng="en"><![CDATA[Proctosigmoidoscopy, Colonic polyps]]></kwd>
<kwd lng="en"><![CDATA[Cancer Screening (MeSH)]]></kwd>
<kwd lng="es"><![CDATA[Colonoscopia]]></kwd>
<kwd lng="es"><![CDATA[Proctosigmoidoscopia, Pólipos del colon (DeCS)]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Acheson]]></surname>
<given-names><![CDATA[AG]]></given-names>
</name>
<name>
<surname><![CDATA[Scholefield]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colorectal cancer: screening and surveillance]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Hawkey]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Bosch]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Richter]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[García-Tsa]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Chan]]></surname>
<given-names><![CDATA[FKL]]></given-names>
</name>
</person-group>
<source><![CDATA[Textbook of Clinical Gastroenterology and hepatology]]></source>
<year>2012</year>
<edition>2nd ed</edition>
<page-range>438-43</page-range><publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Wiley-Blackwell]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bosman]]></surname>
<given-names><![CDATA[FT]]></given-names>
</name>
<name>
<surname><![CDATA[Carneiro]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Hruban]]></surname>
<given-names><![CDATA[RH]]></given-names>
</name>
</person-group>
<source><![CDATA[WHO Classification of Tumours of the Digestive System]]></source>
<year>2010</year>
<edition>4th ed</edition>
<publisher-loc><![CDATA[Geneva ]]></publisher-loc>
<publisher-name><![CDATA[World Health Organization]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bujanda]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Cosme]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gil]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Arenas-Mirave]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Malignant colorectal polyps]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2010</year>
<volume>16</volume>
<numero>25</numero>
<issue>25</issue>
<page-range>3103-11</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gupta]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Balasubramanian]]></surname>
<given-names><![CDATA[BA]]></given-names>
</name>
<name>
<surname><![CDATA[Fu]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Genta]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Lash]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Polyps with advanced neoplasia are smaller in the right than in the left colon: implications for colorectal cancer screening]]></article-title>
<source><![CDATA[Clin Gastroenterol Hepatol]]></source>
<year>2012</year>
<volume>10</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>1395-401</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lowenfels]]></surname>
<given-names><![CDATA[AB]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Holub]]></surname>
<given-names><![CDATA[JL]]></given-names>
</name>
<name>
<surname><![CDATA[Maisonneuve]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Lieberman]]></surname>
<given-names><![CDATA[DA]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determinants of polyp size in patients undergoing screening co-lonoscopy]]></article-title>
<source><![CDATA[BMC Gastroenterol]]></source>
<year>2011</year>
<volume>11</volume>
<page-range>101</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ahmad]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Frank]]></surname>
<given-names><![CDATA[BB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Women's issues in gastroenterology. Preface]]></article-title>
<source><![CDATA[Gas-troenterology Clin North Am]]></source>
<year>2011</year>
<volume>40</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>xiii-xiv</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Brenner]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Hoffmeister]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Arndt]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Haug]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Gender differences in colorectal cancer: implications for age at initiation of screening]]></article-title>
<source><![CDATA[Br J Cancer]]></source>
<year>2007</year>
<volume>96</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>828-31</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bujanda]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Cosme]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Gil]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Arenas-Mirave]]></surname>
<given-names><![CDATA[JI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Malignant colorectal po-lips]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2010</year>
<volume>16</volume>
<numero>25</numero>
<issue>25</issue>
<page-range>3103-11</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Burnett-Hartman]]></surname>
<given-names><![CDATA[AN]]></given-names>
</name>
<name>
<surname><![CDATA[Newcomb]]></surname>
<given-names><![CDATA[PA]]></given-names>
</name>
<name>
<surname><![CDATA[Phipps]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
<name>
<surname><![CDATA[Passarelli]]></surname>
<given-names><![CDATA[MN]]></given-names>
</name>
<name>
<surname><![CDATA[Gr-ady]]></surname>
<given-names><![CDATA[WM]]></given-names>
</name>
<name>
<surname><![CDATA[Upton]]></surname>
<given-names><![CDATA[MP]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colorectal endoscopy, advanced adenomas, and sessile serrated polyps: implications for proximal colon cancer]]></article-title>
<source><![CDATA[Am J Gastroenterol]]></source>
<year>2012</year>
<volume>107</volume>
<numero>8</numero>
<issue>8</issue>
<page-range>1213-9</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Markowitz]]></surname>
<given-names><![CDATA[SD]]></given-names>
</name>
<name>
<surname><![CDATA[Bertagnolli]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Molecular origins of cancer: Molecular basis of colorectal cancer]]></article-title>
<source><![CDATA[N Engl J Med]]></source>
<year>2009</year>
<volume>361</volume>
<numero>25</numero>
<issue>25</issue>
<page-range>2449-60</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[de la Peña]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Diaz]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Moraleja]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Indicaciones de la colonoscopia, rec-toscopia y anuscopia]]></article-title>
<source><![CDATA[Medicine]]></source>
<year>2012</year>
<volume>11</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>451-4</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Waye]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Lower gastrointestinal endoscopy and biopsy]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Hawkey]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Bosch]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Richter]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[García-Tsa]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Chan]]></surname>
<given-names><![CDATA[FKL]]></given-names>
</name>
</person-group>
<source><![CDATA[Textbook of Clinical Gastroenterology and hepatology]]></source>
<year>2012</year>
<edition>2nd edition</edition>
<page-range>936-42</page-range><publisher-loc><![CDATA[Oxford ]]></publisher-loc>
<publisher-name><![CDATA[Wi-ley-Blackwell]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<article-title xml:lang=""><![CDATA[The Paris endoscopic classification of superficial neoplastic lesions: esophagus, stomach, and colon: November 30 to December 1, 2002]]></article-title>
<source><![CDATA[GastrointestEndosc]]></source>
<year>2003</year>
<volume>58</volume>
<numero>^s6</numero>
<issue>^s6</issue>
<supplement>6</supplement>
<page-range>S3-43</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ali]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Umm-a-OmarahGilani]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Li]]></surname>
<given-names><![CDATA[YQ]]></given-names>
</name>
<name>
<surname><![CDATA[Zuo]]></surname>
<given-names><![CDATA[XL]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Kudo's pit pattern classification for colorectal neoplasms: A meta-analysis]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2014</year>
<volume>20</volume>
<numero>35</numero>
<issue>35</issue>
<page-range>12649-56</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lagares-Garcia]]></surname>
<given-names><![CDATA[JA]]></given-names>
</name>
<name>
<surname><![CDATA[Kurek]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Collier]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Diaz]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Schilli]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Richey]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colonoscopy in octogenarians and older patients]]></article-title>
<source><![CDATA[Surg Endosc]]></source>
<year>2001</year>
<volume>15</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>262-5</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cardona-Villamizar]]></surname>
<given-names><![CDATA[HJ]]></given-names>
</name>
<name>
<surname><![CDATA[Otero-Regino]]></surname>
<given-names><![CDATA[W]]></given-names>
</name>
<name>
<surname><![CDATA[Forero-Piñeros]]></surname>
<given-names><![CDATA[EA]]></given-names>
</name>
<name>
<surname><![CDATA[Gutierrez-Ceballos]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Significado de los pólipos en colon distal, en una población de un país en vía de desarrollo: prevalencia y asociación con neoplasia proximal sincrónica]]></article-title>
<source><![CDATA[Rev Colomb Gastroenterol]]></source>
<year>2004</year>
<volume>19</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>253-62</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Overholt]]></surname>
<given-names><![CDATA[BF]]></given-names>
</name>
<name>
<surname><![CDATA[Brooks-Belli]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Grace]]></surname>
<given-names><![CDATA[MG]]></given-names>
</name>
<name>
<surname><![CDATA[Rankin]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Harrell]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Turyk]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluating Screening Age for Colonoscopy: A Quality Assurance Assessment]]></article-title>
<source><![CDATA[J Clin Gastroenterol]]></source>
<year>2010</year>
<volume>44</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>e147-53</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<collab>Centers for Disease Control and Prevention (CDC)</collab>
<article-title xml:lang=""><![CDATA[Vital Signs: Colo-rectal Cancer Screening Among Adults Aged 50-75 Years. United States, 2008]]></article-title>
<source><![CDATA[MMWR]]></source>
<year>2010</year>
<volume>59</volume>
<numero>26</numero>
<issue>26</issue>
<page-range>808-12</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hassan]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Repici]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Zullo]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New Paradigms for Colonoscopic Management of Diminutive Colorectal Polyps: Predict, Resect, and Discard or Do Not Resect?]]></article-title>
<source><![CDATA[Clin Endosc]]></source>
<year>2013</year>
<volume>46</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>130-7</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Lin]]></surname>
<given-names><![CDATA[OS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Performing colonoscopy in elderly and very elderly patients: Risks, costs and benefits]]></article-title>
<source><![CDATA[World J Gastrointest Endosc]]></source>
<year>2014</year>
<volume>16</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>220-6</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21</label><nlm-citation citation-type="confpro">
<collab>Asociación Médica Mundial</collab>
<source><![CDATA[Declaración de Helsinki de la Asociación Médica Mundial. Principios éticos para las investigaciones médicas en seres humanos]]></source>
<year>2014</year>
<conf-name><![CDATA[ Fortaleza: 64a Asamblea General de la AMM]]></conf-name>
<conf-date>2013</conf-date>
<conf-loc> </conf-loc>
</nlm-citation>
</ref>
<ref id="B22">
<label>22</label><nlm-citation citation-type="">
<collab>Colombia. Ministerio de Salud</collab>
<source><![CDATA[Resolución 8430 de 1993 (octubre 4): Por la cual se establecen las normas científicas, técnicas y administrativas para la investigación en salud]]></source>
<year>1993</year>
<publisher-loc><![CDATA[Bogotá D.C ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B23">
<label>23</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Silva SM]]></surname>
<given-names><![CDATA[Rosa VF]]></given-names>
</name>
<name>
<surname><![CDATA[Santos AC]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Oliveira PG]]></surname>
<given-names><![CDATA[Susa JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of patients age and colorectal polips size on histopatholgy findings]]></article-title>
<source><![CDATA[Arq Bras CirDig]]></source>
<year>2014</year>
<volume>27</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>109-13</page-range></nlm-citation>
</ref>
<ref id="B24">
<label>24</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López-Kostner]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Kronber]]></surname>
<given-names><![CDATA[U]]></given-names>
</name>
<name>
<surname><![CDATA[Zárate]]></surname>
<given-names><![CDATA[AJ]]></given-names>
</name>
<name>
<surname><![CDATA[Wielandt]]></surname>
<given-names><![CDATA[AM]]></given-names>
</name>
<name>
<surname><![CDATA[Pinto]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Suazo]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Programa de detección de neoplasias colorrectales en población mayor de 50 años]]></article-title>
<source><![CDATA[Rev Med Chil]]></source>
<year>2012</year>
<volume>140</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>281-6</page-range></nlm-citation>
</ref>
<ref id="B25">
<label>25</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ko]]></surname>
<given-names><![CDATA[HJ]]></given-names>
</name>
<name>
<surname><![CDATA[Youn]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Determination of the beginning age for colonoscopic screening among colonoscopy-naive individuals]]></article-title>
<source><![CDATA[Clin Res Hepatol Gastroenterol]]></source>
<year>2012</year>
<volume>36</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>384-90</page-range></nlm-citation>
</ref>
<ref id="B26">
<label>26</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bafandeh]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Khoshbaten]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Eftekhar Sadat]]></surname>
<given-names><![CDATA[AT]]></given-names>
</name>
<name>
<surname><![CDATA[Farhang]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Clinical predictors of colorectal polyps and carcinoma in a low prevalence region: Results of a colonoscopy based study]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2008</year>
<volume>14</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1534-8</page-range></nlm-citation>
</ref>
<ref id="B27">
<label>27</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zare-Mirzaie]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Abolhasani]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Aryamanesh]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Left sided colorectal adenomatous polyps have more risk for high grade dysplasia]]></article-title>
<source><![CDATA[Acta Med Iran]]></source>
<year>2013</year>
<volume>51</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>172-7</page-range></nlm-citation>
</ref>
<ref id="B28">
<label>28</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rundle]]></surname>
<given-names><![CDATA[AG]]></given-names>
</name>
<name>
<surname><![CDATA[Lebwohl]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Vogel]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Levine]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Neugut]]></surname>
<given-names><![CDATA[AI]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colonoscopic screening in average -isk individual ages 40 to 49 vs 50 to 59 years]]></article-title>
<source><![CDATA[Gastroenterology]]></source>
<year>2008</year>
<volume>134</volume>
<numero>5</numero>
<issue>5</issue>
<page-range>1311-5</page-range></nlm-citation>
</ref>
<ref id="B29">
<label>29</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Iravani]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Kashfi]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Azimzadeh]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Lashkari]]></surname>
<given-names><![CDATA[MH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence and characteristics of colorectal polyps in symptomatic and asymptomatic Iranian patients undergoing colonoscopy from 2009-2013]]></article-title>
<source><![CDATA[Asian Pac J CancerPrev]]></source>
<year>2014</year>
<volume>15</volume>
<numero>22</numero>
<issue>22</issue>
<page-range>9933-7</page-range></nlm-citation>
</ref>
<ref id="B30">
<label>30</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Giuliani]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Caporale]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Corona]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Ricciardulli]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Di Bari]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Demoro]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Large size, villous content and distal location are associated with severe dysplasia in colorectal adenomas]]></article-title>
<source><![CDATA[Anticancer Res]]></source>
<year>2006</year>
<volume>26</volume>
<numero>5B</numero>
<issue>5B</issue>
<page-range>3717-22</page-range></nlm-citation>
</ref>
<ref id="B31">
<label>31</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eshghi]]></surname>
<given-names><![CDATA[MJ]]></given-names>
</name>
<name>
<surname><![CDATA[Fatemi]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Hashemy]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Aldulaimi]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Khodadoostan]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A retrospective study of patients with colorectal polyps]]></article-title>
<source><![CDATA[Gastroenterol Hepatol Bed Bench]]></source>
<year>2011</year>
<volume>4</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>17-22</page-range></nlm-citation>
</ref>
<ref id="B32">
<label>32</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Morimoto]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Newcomb]]></surname>
<given-names><![CDATA[PA]]></given-names>
</name>
<name>
<surname><![CDATA[Ulrich]]></surname>
<given-names><![CDATA[CM]]></given-names>
</name>
<name>
<surname><![CDATA[Bostick]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Lais]]></surname>
<given-names><![CDATA[CJ]]></given-names>
</name>
<name>
<surname><![CDATA[Potter]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Risk factors for hyperplastic and adenomatous polyps: evidence for malignant potential?]]></article-title>
<source><![CDATA[Cancer Epidemiol Biomarkers Prev]]></source>
<year>2002</year>
<volume>11</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1012-8</page-range></nlm-citation>
</ref>
<ref id="B33">
<label>33</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Castells]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Bessa]]></surname>
<given-names><![CDATA[X]]></given-names>
</name>
<name>
<surname><![CDATA[Quintero]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Bujanda]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Cubiella]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Salas]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Risk of advanced proximal neoplasms according to distal colorectal findings: comparison of sigmoidoscopy-based strategies]]></article-title>
<source><![CDATA[J Natl Cancer Inst]]></source>
<year>2013</year>
<volume>105</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>878-86</page-range></nlm-citation>
</ref>
<ref id="B34">
<label>34</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Terhaar Sive Droste]]></surname>
<given-names><![CDATA[JS]]></given-names>
</name>
<name>
<surname><![CDATA[Craanen]]></surname>
<given-names><![CDATA[ME]]></given-names>
</name>
<name>
<surname><![CDATA[van der Hulst]]></surname>
<given-names><![CDATA[RWM]]></given-names>
</name>
<name>
<surname><![CDATA[Bartelsman]]></surname>
<given-names><![CDATA[JF]]></given-names>
</name>
<name>
<surname><![CDATA[Bezemer]]></surname>
<given-names><![CDATA[DP]]></given-names>
</name>
<name>
<surname><![CDATA[Cappendijk]]></surname>
<given-names><![CDATA[KR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Colonoscopic yield of colorectal neoplasia in dailyclinical practice]]></article-title>
<source><![CDATA[World J Gastroenterol]]></source>
<year>2009</year>
<volume>15</volume>
<numero>9</numero>
<issue>9</issue>
<page-range>1085-92</page-range></nlm-citation>
</ref>
<ref id="B35">
<label>35</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Segnan]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Armaroli]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Bonelli]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Risio]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Scioallero]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Zappa]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Once-Only Sigmoidoscopy in Colorectal Cancer Screening: Follow-up Findings of the Italian Randomized Controlled Trial-SCORE]]></article-title>
<source><![CDATA[J Natl Cancer]]></source>
<year>2011</year>
<volume>103</volume>
<numero>17</numero>
<issue>17</issue>
<page-range>1310-22</page-range></nlm-citation>
</ref>
<ref id="B36">
<label>36</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[FW]]></given-names>
</name>
<name>
<surname><![CDATA[Hsu]]></surname>
<given-names><![CDATA[PI]]></given-names>
</name>
<name>
<surname><![CDATA[Chuang]]></surname>
<given-names><![CDATA[HY]]></given-names>
</name>
<name>
<surname><![CDATA[Tu]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Mar]]></surname>
<given-names><![CDATA[GY]]></given-names>
</name>
<name>
<surname><![CDATA[King]]></surname>
<given-names><![CDATA[TM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Prevalence and risk factors of asymptomatic colorectal polyps in taiwan]]></article-title>
<source><![CDATA[Gastroenterol Res Pract]]></source>
<year>2014</year>
<volume>2014</volume>
<page-range>985205</page-range></nlm-citation>
</ref>
<ref id="B37">
<label>37</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Binda]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Pereira-Lima]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[CA]]></given-names>
</name>
<name>
<surname><![CDATA[Falkemberg]]></surname>
<given-names><![CDATA[LT]]></given-names>
</name>
<name>
<surname><![CDATA[Azambuja]]></surname>
<given-names><![CDATA[DB]]></given-names>
</name>
<name>
<surname><![CDATA[Cruz]]></surname>
<given-names><![CDATA[JV]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Is there a role for sigmoidoscopy in symptomatic patients? Analysis of a study correlating distal and proximal colonic neoplasias detected by colonoscopy in a symptomatic population]]></article-title>
<source><![CDATA[Arg Gastroenterol]]></source>
<year>2007</year>
<volume>4</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>2-7</page-range></nlm-citation>
</ref>
<ref id="B38">
<label>38</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Marderstein]]></surname>
<given-names><![CDATA[EL]]></given-names>
</name>
<name>
<surname><![CDATA[Church]]></surname>
<given-names><![CDATA[JM]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Classic "outlet" rectal bleeding does not require full colonoscopy to exclude significant pathology]]></article-title>
<source><![CDATA[Dis Colon Rectum]]></source>
<year>2008</year>
<volume>51</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>202-6</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
