<?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>S2341-45452023000200016</article-id>
<article-id pub-id-type="doi">10.1159/000521654</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Endoscopic Resection of Gastrointestinal Neuroendocrine Tumors: Long-Term Outcomes and Comparison of Endoscopic Techniques]]></article-title>
<article-title xml:lang="pt"><![CDATA[Exérese endoscópica de tumores neuroendócrinos gastrointestinais: resultados a longo prazo e comparação de técnicas endoscópicas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pimentel-Nunes]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A3"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortigão]]></surname>
<given-names><![CDATA[Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Afonso]]></surname>
<given-names><![CDATA[Luís Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bastos]]></surname>
<given-names><![CDATA[Rui Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Libânio]]></surname>
<given-names><![CDATA[Diogo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dinis-Ribeiro]]></surname>
<given-names><![CDATA[Mário]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Portuguese Oncology Institute - Porto Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Porto Faculty of Medicine Department of Surgery and Physiology ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Porto Faculty of Medicine CINTESIS/Biostatistics and Medical Informatics ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Portuguese Oncology Institute - Porto Department of Pathology ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2023</year>
</pub-date>
<volume>30</volume>
<numero>2</numero>
<fpage>16</fpage>
<lpage>24</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452023000200016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452023000200016&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452023000200016&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Gastrointestinal neuroendocrine tumors (GI-NETs) are being more frequently diagnosed and treated by endoscopic resection (ER) techniques. However, comparison studies of the different ER techniques or long-term out-comes are rarely reported.  Methods:  This was a single-center retrospective study analyzing short and long-term outcomes after ER of gastric, duodenum, and rectal GI-NETs. Comparison between standard EMR (sEMR), EMR with a cap (EMRc), and endoscopic submucosal dissection (ESD) was made.  Results:  Fifty-three patients with GI-NET (25 gastric, 15 duodenal, and 13 rectal; sEMR = 21; EMRc = 19; ESD = 13) were included in the analysis. Median tumor size was 11 mm (range 4-20), significantly larger in the ESD and EMRc groups compared to the sEMR group (p &lt; 0.05). Complete ER was possible in all cases with 68% histological complete resection (no difference between the groups). Complication rate was significantly higher in the EMRc group (EMRc 32%, ESD 8%, and EMRs 0%, p = 0.01). Local recurrence occurred in only one patient, and systemic recurrence in 6%, with size &#8805; 12 mm being a risk factor for systemic recurrence (p = 0.05). Specific disease-free survival after ER was 98%.  Conclusion:  ER is a safe and highly effective treatment particularly for less than 12 mm luminal GI-NETs. EMRc is associated with a high complication rate and should be avoided. sEMR is an easy and safe technique that is associated with long-term curability, and it is probably the best therapeutic option for most luminal GI-NETs. ESD appears to be the best option for lesions that cannot be resected en bloc with sEMR. Multicenter, prospective randomized trials should confirm these results.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  Os tumores neuroendócrinos gastrointestinais (GI-NET) são frequentemente diagnosticados e tratados por técnicas de resseção endoscópica (ER). Contudo, estudos comparativos das diferentes técnicas de ER ou resultados a longo prazo são raramente descritos.  Métodos: Estudo unicêntrico retrospectivo que analisa resultados a curto e longo prazo após ER de NETs gástricos, duodenais e retais. Realizou-se uma análise comparativa entre as técnicas de mucosectomia convencional (sEMR), mucosectomia com cap (EMRc) e disseção endoscópica da submucosa (ESD)  Resultados:  Foram incluídos 53 doentes com GI-NET (25 gástricos, 15 duodenais e 13 rectais; sEMR=21; EMRc=19; ESD=13). A mediana do tamanho da lesão foi 11 mm (âmbito 4-20), sendo significativamente maiores nos grupos ESD e EMRc quando comparado com sEMR (p &lt; 0.05). A ER completa foi possível em todos os casos com taxa de resseção histológica completa de 68% (sem diferença entre os grupos). A taxa de complicações foi significativamente superior no grupo EMRc (EMRc 32%, ESD 8% e EMRs 0%, p = 0.01). Recorrência local apenas ocorreu em 1 doente e recorrência sistémica em 6%, com o tamanho da lesão &gt; 12mm a ser um factor de risco para recorrência sistémica (p = 0.05). Sobrevida específica de doença após ER de 98%.  Conclusão:  ER é se-gura e altamente eficaz para o tratamento de GI-NETs principalmente com tamanho inferior a 12 mm. EMRc está associada a uma taxa de complicações elevada e deve ser evitada. sEMR é uma técnica segura e eficaz que se associa a curabilidade a longo prazo, sendo provavelmente a melhor opção terapêutica para a maioria dos GI-NETs luminais. ESD parece ser a melhor opção para as lesões que não podem ser removidas em bloco pela técnica de sEMR. Estudos randomizados, prospectivos e multicêntricos devem confirmar estes resultados.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Neuroendocrine tumours]]></kwd>
<kwd lng="en"><![CDATA[Survival]]></kwd>
<kwd lng="en"><![CDATA[Endoscopic mucosal resection]]></kwd>
<kwd lng="en"><![CDATA[Endoscopic submucosal dissection]]></kwd>
<kwd lng="pt"><![CDATA[Tumores neuroendócrinos]]></kwd>
<kwd lng="pt"><![CDATA[Sobrevida]]></kwd>
<kwd lng="pt"><![CDATA[Ressecção endoscópica da mucosa]]></kwd>
<kwd lng="pt"><![CDATA[Dissecção endoscópica da submucosa]]></kwd>
</kwd-group>
</article-meta>
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