<?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>S2341-45452021000500328</article-id>
<article-id pub-id-type="doi">10.1159/000514714</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Gastric Hyperplastic Polyps: A Benign Entity? Analysis of Recurrence and Neoplastic Transformation in a Cohort Study]]></article-title>
<article-title xml:lang="pt"><![CDATA[Pólipos gástricos hiperplásicos: uma entidade benigna? Análise da recorrência e malignização num estudo de coorte]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[João]]></surname>
<given-names><![CDATA[Mafalda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Areia]]></surname>
<given-names><![CDATA[Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alves]]></surname>
<given-names><![CDATA[Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Elvas]]></surname>
<given-names><![CDATA[Luís]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Taveira]]></surname>
<given-names><![CDATA[Filipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brito]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Saraiva]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cadime]]></surname>
<given-names><![CDATA[Ana Teresa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Portuguese Oncology Institute of Coimbr Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>10</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>10</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>5</numero>
<fpage>328</fpage>
<lpage>335</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452021000500328&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452021000500328&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452021000500328&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Introduction:  Hyperplastic polyps represent 30-93% of all gastric epithelial polyps. They are generally detected as innocuous incidental findings; however, they have a risk of neoplastic transformation and recurrence. Frequency and risk factors for neoplastic transformation and recurrence are not well established and are fields of ongoing interest. This study aims to evaluate the frequency of and identify the risk factors for recurrence and neoplastic change of gastric hyperplastic polyps (GHP).  Methods: A single-centre retrospective cohort study including consecutive patients who underwent endoscopic resection of GHP from January 2009 to June 2020. Demographic, endoscopic, and histopathologic data was retrieved from the electronic medical records.  Results: A total of 195 patients were included (56% women; median age 67 [35-87] years). The median size of GHP was 10 (3-50) mm, 62% (n = 120) were sessile, 61% (n = 119) were located in the antrum, and 36% (n = 71) had synchronous lesions. Recurrence rate after endoscopic resection was 23% (n = 26). In multivariate analysis, antrum location was the only risk factor for recurrence (odds ratio [OR] 3.0; 95% confidence interval [CI] 1.1-8.1). Overall, 5.1% (n = 10) GHP showed neoplastic transformation, with low-grade dysplasia in 5, high-grade dysplasia in 4, and adenocarcinoma in 1. In multivariate analysis, a size &gt;25 mm (OR 84; 95% CI 7.4-954) and the presence of intestinal metaplasia (OR 7.6; 95% CI 1.0-55) and dysplasia (OR 86; 95% CI 10-741) in adjacent mucosa were associated with an increased risk of neoplastic transformation. Recurrence was not associated with neoplastic transformation (OR 1.1; 95% CI 0.2-5.9).  Discussion: Our results confirmed the risk of recurrence and neoplastic transformation of GHP. Antrum location was a predictor of recurrence. The risk of neoplastic change was increased in large lesions and with intestinal metaplasia and dysplasia in adjacent mucosa. More frequent endoscopic surveillance may be required in these subgroups of GHP.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo:  Introdução e objetivos:  Os pólipos hiperplásicos constituem 30-93% das lesões gástricas epiteliais benignas. Apresentam-se frequentemente como achados endoscópicos incidentais inócuos, no entanto, apresentam risco de recorrência e transformação neoplásica. A frequência e fatores associados à recorrência e transformação neoplásica não estão bem estabelecidos e são áreas de interesse crescente. Este estudo pretende avaliar a frequência e identificar fatores associados à recorrência e transformação maligna dos pólipos gástricos hiperplásicos (PGH).  Métodos: Estudo de coorte retrospectivo unicêntrico incluindo consecutivamente doentes com PGH submetidos a resseção endoscópica entre janeiro de 2009 e junho de 2020. Efetuada análise das características demográficas, endoscópicas e anatomopatológicas através dos registos clínicos eletrónicos.  Sumários dos resultados: Incluídos 195 doentes género feminino: 56%, idade mediana: 67 (35-87) anos. Os pólipos apresentavam tamanho mediano de 10 (3-50) mm, 61.5% (n = 120) eram sésseis, 61% (n = 119) apresentavam localização antral e 36% (n = 71) tinham lesões síncronas. A frequência de recorrência foi 23% (n = 26). Na análise multivariada, apenas a localização no antro se associou significativamente a recorrência odds ratio (OR): 3.0; intervalo de confiança (IC) 95%: 1.1-8.1). Em 5.1% (n = 10) dos casos verificou-se transformação neoplásica, correspondendo a 5 casos de displasia de baixo grau, 4 casos de displasia de alto grau e 1 caso de carcinoma. Na análise multivariada, dimensão superior a 25 mm (OR: 84; IC95%: 7.4-954), presença de metaplasia (OR: 7.6; IC95%: 1.0-55) e displasia (OR: 86; IC95%: 10-741) na mucosa adjacente associaram-se a transformação neoplásica. A recorrência não se associou a transformação neoplásica (OR: 1.1; IC95%: 0.2-5.9).  Discussão/Conclusão: Estes resultados corroboraram os riscos de recorrência e transformação neoplásica associados aos PGH. A localização antral foi preditor de recorrência. O risco de transformação neoplásica foi superior em lesões maiores e coexistência de metaplasia e displasia na mucosa adjacente. Poderá justificar-se uma estratégia de vigilância mais frequente nestes subgrupos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Stomach neoplasms]]></kwd>
<kwd lng="en"><![CDATA[Epidemiology]]></kwd>
<kwd lng="en"><![CDATA[Pathology]]></kwd>
<kwd lng="en"><![CDATA[Endoscopy]]></kwd>
<kwd lng="en"><![CDATA[Digestive system]]></kwd>
<kwd lng="pt"><![CDATA[Neoplasias gástricas]]></kwd>
<kwd lng="pt"><![CDATA[Epidemiologia]]></kwd>
<kwd lng="pt"><![CDATA[Patologia]]></kwd>
<kwd lng="pt"><![CDATA[Endoscopia]]></kwd>
<kwd lng="pt"><![CDATA[Sistema digestivo]]></kwd>
</kwd-group>
</article-meta>
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