<?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>2341-4545</journal-id>
<journal-title><![CDATA[GE-Portuguese Journal of Gastroenterology]]></journal-title>
<abbrev-journal-title><![CDATA[GE Port J Gastroenterol]]></abbrev-journal-title>
<issn>2341-4545</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Gastrenterologia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2341-45452021000200097</article-id>
<article-id pub-id-type="doi">10.1159/000510728</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Dysplasia Surveillance in Inflammatory Bowel Disease: A Cohort Study]]></article-title>
<article-title xml:lang="pt"><![CDATA[Vigilância de displasia na doença inflamatória intestinal: estudo coorte]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saraiva]]></surname>
<given-names><![CDATA[Sofia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosa]]></surname>
<given-names><![CDATA[Isadora]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moleiro]]></surname>
<given-names><![CDATA[Joana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[João Pereira da]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fonseca]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[António Dias]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Português de Oncologia de Lisboa Francisco Gentil E.P.E. (IPOLFG) Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Lisbon ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Português de Oncologia de Lisboa Francisco Gentil E.P.E. (IPOLFG) Department of Pathology ]]></institution>
<addr-line><![CDATA[Lisbon ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>04</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>04</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>2</numero>
<fpage>97</fpage>
<lpage>105</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452021000200097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452021000200097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452021000200097&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Patients with colonic inflammatory bowel disease (IBD) are at an increased risk for colorectal cancer (CRC), whereby surveillance colonoscopy is recommended.  Aim:  To study the clinical and endoscopic variables associated with dysplasia in IBD patients.  Methods:  A cohort study was conducted on IBD patients who were part of a colonoscopy surveillance program between 2011 and 2016.  Results:  A total of 342 colonoscopies were performed on 162 patients (105 with ulcerative colitis [UC] and 57 with Crohn&#8217;s disease). Random biopsies were performed at least once on 81.5% of patients; 33.3% of the patients underwent chromoendoscopy (CE) at least once. Endoscopically resectable lesions were detected in 55 patients (34%), and visible lesions deemed unfit for endoscopic resection were found in 5 patients (3.1%). Overall, 62 dysplastic visible lesions (58 with lowgrade dysplasia and 3 with high-grade dysplasia) and 1 adenocarcinoma were found in 34 patients. Dysplasia in random biopsies was present in 3 patients, the yield of random biopsies for dysplasia being 1.85%/patient (3/162), 1.75%/ colonoscopy (6/342), and 0.25%/biopsy (9/3,637). Dysplasia detected in random biopsies was significantly associated with a personal history of visible dysplasia (p = 0.006). Upon univariate analysis, dysplasia was significantly associated with the type of IBD, the performance of random biopsies, and CE (p = 0.016/0.009/0.05, respectively). On multivariate analysis, dysplasia was associated with duration of disease.  Conclusion:  Our data confirm that patients with long-standing IBD, in particular UC, should be enrolled in dysplasia surveillance programs, and that performing CE and random biopsies seems to help in the detection of colonic neoplastic lesions.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Introdução:  Nos doentes com doença inflamatória intestinal (DII) está recomendada vigilância por colonoscopia para detetar e tratar lesões neoplásicas iniciais, dado o risco aumentado de cancro colo-rectal (CCR). O objetivo do trabalho foi estudar variáveis clínicas e endoscópicas associadas a displasia.  Métodos:  Estudo coorte - doentes com DII integrados num programa de vigilância de displasia entre 2011-2016.  Resultados:  Um total de 342 colonoscopias foi realizado em 162 doentes, 105 com colite ulcerosa (CU) e 57 com doença de Crohn (DC). Foram efetuadas biopsias aleatórias (BA) em 81,5% dos doentes (média: 27.5 ± 6.4 biopsias/colonoscopia) e 33.3% realizaram cromoendoscopia. 55 doentes apresentaram lesões endoscopicamente ressecáveis e 5 doentes lesões irressecáveis. No total, em 34 doentes, foram identificadas 6 lesões displásicas visíveis (58 com displasia de baixo grau e 3 com displasia de alto grau) e um adenocarcinoma. Foi detetada displasia em BA em 3 doentes sendo o rendimento das BA de 1.85% por doente (3/162), 1.75% por colonoscopia (6/342) e 0.25% por biopsia (9/3,637). A displasia em BA associou-se à história pessoal de lesões displásicas (p = 0.006). A presença de displasia associouse, na análise univariada, com: tipo de DII (p = 0.016), realização de BA (p = 0.009) e cromoendoscopia (p = 0.05). Na análise multivariada, verificou-se associação com aduração da doença.  Conclusão:  Doentes com DII de longa duração deverão ser incluídos num programa de vigilância de displasia. A realização de cromoendoscopia e BA é útil na deteção de lesões displásicas do cólon.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Inflammatory bowel disease (IBD)]]></kwd>
<kwd lng="en"><![CDATA[Ulcerative colitis]]></kwd>
<kwd lng="en"><![CDATA[Crohn&#8217;s disease]]></kwd>
<kwd lng="en"><![CDATA[Dysplasia]]></kwd>
<kwd lng="en"><![CDATA[Surveillance]]></kwd>
<kwd lng="pt"><![CDATA[DII]]></kwd>
<kwd lng="pt"><![CDATA[Colite ulcerosa]]></kwd>
<kwd lng="pt"><![CDATA[Doença de Crohn]]></kwd>
<kwd lng="pt"><![CDATA[Displasia]]></kwd>
<kwd lng="pt"><![CDATA[Vigilância]]></kwd>
</kwd-group>
</article-meta>
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