<?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>S2341-45452024000500004</article-id>
<article-id pub-id-type="doi">10.1159/000535815</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Portuguese Pancreatic Club Perspective on the Surveillance Strategy for Pancreatic Neuroendocrine Tumours: When and How to Do It?]]></article-title>
<article-title xml:lang="pt"><![CDATA[Perspetiva do Clube Português de Pâncreas sobre a estratégia de vigilância dos tumores neuroendócrinos do pâncreas: quando e como vigiar?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Marques]]></surname>
<given-names><![CDATA[Miguel Bispoa Susana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fernandes]]></surname>
<given-names><![CDATA[Alexandra]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodrigues-Pinto]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vilas-Boas]]></surname>
<given-names><![CDATA[Filipe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rio-Tinto]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Devière]]></surname>
<given-names><![CDATA[Jacques]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Champalimaud Foundation Digestive Oncology Unit ]]></institution>
<addr-line><![CDATA[Lisbon ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Hospitalar de Leiria Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Leiria ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Hospitalar Universitário de São João Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Porto Faculty of Medicine ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Université Libre de Bruxelles Erasme University Hospital Department of Gastroenterology, Hepatopancreatology, and Digestive Oncology]]></institution>
<addr-line><![CDATA[Brussels ]]></addr-line>
<country>Belgium</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2024</year>
</pub-date>
<volume>31</volume>
<numero>5</numero>
<fpage>4</fpage>
<lpage>11</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452024000500004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452024000500004&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452024000500004&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Pancreatic neuroendocrine tumours (pNETs) are a highly heterogeneous group of tumours with widely variable biological behaviour. The incidence of pNETs has risen exponentially over the last three decades, particularly for asymptomatic small pNETs (&#8804;2cm),dueto the widespread use of cross-sectional imaging in clinical practice.  Summary:  Current consensus guidelines suggest that incidentally discovered pNETs &#8804;2cmcanbe selectively followed due to the overall low risk of malignancy. Nevertheless, the &#8220;watch-and-wait&#8221; management strategy for small asymptomatic pNETs is still not widely accepted due to the lack of long-term data on the natural history of these small lesions. Additionally, it is clear that a subset of small pNETs may show malignant behaviour.  Key Message:  Given the non-negligible risk of malignancy even in small pNETs, it is of the utmost im-portance to identify other preoperative factors, other than size, that may help to stratify the risk of malignant behaviour and guide clinical management. In this article, the Portuguese Pancreatic Club reviews the importance of risk strati&#64257;cation of pNETs and presents an updated perspective on the surveillance strategy for sporadic well-differentiated pNETs.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Contexto:  Os tumores neuroendócrinos do pâncreas (pNETs) correspondem a um grupo heterogéneo de tumores com comportamento biológico variável. A sua incidência aumentou exponencialmente nas últimas três décadas, particularmente à custa do diagnóstico incidental de pNETs de reduzidas dimensões (&#8804;2 cm) devido à utilização crescente de exames de imagem seccional na prática clínica.  Sumário:  As normas de consenso internacionais sugerem que os pNETs &#8804;2 cm poderão ser seletivamente vigiados, dado o seu baixo risco global de comportamento maligno. No entanto, a estratégia proposta de &#8220;watch and wait&#8221; na abordagem dos pNETs assintomáticos &#8804;2cm não tem sido amplamente aceite devido à ausência de dados a longo-prazo relativos à sua história natural. Adicionalmente, é hoje evidente que um subgrupo destes pequenos tumores poderá apresentar comportamento maligno.  Mensagens Chave:  Dado o risco não desprezível de agressividade biológica mesmo nos pNETs incidentais de reduzidas dimensões, torna-se essencial identi&#64257;car fatores pré-operatórios, para além da dimensão do tumor, que permitam estrati&#64257;car o seu risco de malignidade e guiar a abordagem clínica. No presente artigo o Clube Português de Pâncreas apresenta uma perspectiva atual sobre a estrati&#64257;cação do risco e a estratégia a adoptar na vigilância dos pNETs esporádicos bem-diferenciados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Endoscopic ultrasound]]></kwd>
<kwd lng="en"><![CDATA[Ki-67 proliferative index]]></kwd>
<kwd lng="en"><![CDATA[Pancreatic neuroendocrine tumours]]></kwd>
<kwd lng="en"><![CDATA[Surveillance]]></kwd>
<kwd lng="pt"><![CDATA[Ecoendoscopia]]></kwd>
<kwd lng="pt"><![CDATA[Indice proliferativo Ki-67]]></kwd>
<kwd lng="pt"><![CDATA[Tumores neuroendócrinos pancreáticos]]></kwd>
<kwd lng="pt"><![CDATA[pNETs]]></kwd>
<kwd lng="pt"><![CDATA[Vigilância]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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