<?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>S2341-45452025000200051</article-id>
<article-id pub-id-type="doi">10.1159/000541220</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Positive Yersinia Serology and Colonic Cobblestone Pattern: A Diversion or Main Culprit?]]></article-title>
<article-title xml:lang="pt"><![CDATA[Serologia Yersinia positiva e padrão do cólon em pedra de calçada: uma distração ou o principal culpado?]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Revés]]></surname>
<given-names><![CDATA[Joana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Frias-Gomes]]></surname>
<given-names><![CDATA[Catarina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramos]]></surname>
<given-names><![CDATA[Lídia Roque]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Glória]]></surname>
<given-names><![CDATA[Luísa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Beatriz Ângelo Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Loures ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2025</year>
</pub-date>
<volume>32</volume>
<numero>2</numero>
<fpage>51</fpage>
<lpage>57</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452025000200051&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452025000200051&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452025000200051&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Yersinia enterocolitica infection, the third most prevalent gastrointestinal infection in Europe, poses a diagnostic challenge due to its resemblance to other common con-ditions such as acute appendicitis, Crohn&#8217;s disease, and malignancy. We report the case of a 48-year-old female patient who sought medical attention for abdominal pain and diarrhoea. Her endoscopic examination revealed a cobblestone pattern affecting the entire colon, more pro-nounced in the right colon, but with normal mucosa in the terminal ileum. This unique presentation created a challenge in distinguishing Yersiniosis from Crohn&#8217;s disease. This case report aimed to highlight this atypical endoscopic manifestation of Y. enterocolitica infection. We underline the subacute nature of the symptoms, which can last up to 4-6 weeks. This reinforces the importance of considering Y. enterocolitica infection as a diagnostic possibility, even when the endoscopic appearance closely resembles other chronic intestinal diseases.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo A infecção por Yersinia enterocolitica, a terceira infecção gastrointestinal mais prevalente na Europa, representa um desa&#64257;o diagnóstico devido à sua semelhança com outras doenças, como a apendicite aguda, doença de Crohn e neoplasias. Apresentamos o caso de uma doente do sexo feminino, com 48 anos de idade, que recorreu ao serviço de urgência por dor abdominal e diarreia. A colonoscopia revelou um padrão em pedra de calçada envolvendo todo o cólon (sobretudo o cólon direito), mas com mucosa do íleon terminal normal. Esta forma de apresentação única com envolvimento isolado do cólon criou um desa&#64257;o diagnóstico na distinção entre Yersiniose e doença de Crohn. Este caso tem como objetivo realçar uma manifestação endoscópica atípica da infecção por Y. enterocolitica. Para além disso, pretende destacar a natureza subaguda dos sintomas, que podem durar até 4 a 6 semanas. Assim, torna-se essencial considerar a infecção por Y. enterocolitica como uma possibilidade diagnóstica, mesmo quando a aparência endoscópica se assemelha a outras doenças intestinais crónicas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Yersinia enterocolitica]]></kwd>
<kwd lng="en"><![CDATA[Colitis]]></kwd>
<kwd lng="en"><![CDATA[Crohn&#8217;s disease]]></kwd>
<kwd lng="pt"><![CDATA[Yersinia enterocolitica]]></kwd>
<kwd lng="pt"><![CDATA[Colite]]></kwd>
<kwd lng="pt"><![CDATA[Doença de Crohn]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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