<?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>S2341-45452021000200121</article-id>
<article-id pub-id-type="doi">10.1159/000507788</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Adenomyomatosis of the Common Bile Duct and Ampulla of Vater]]></article-title>
<article-title xml:lang="pt"><![CDATA[Adenomiomatose da Via Biliar Principal e Ampola de Vater]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gouveia]]></surname>
<given-names><![CDATA[Catarina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Fidalgo]]></surname>
<given-names><![CDATA[Catarina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Loureiro]]></surname>
<given-names><![CDATA[Rui]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oliveira]]></surname>
<given-names><![CDATA[Helena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maio]]></surname>
<given-names><![CDATA[Rui]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cravo]]></surname>
<given-names><![CDATA[Marília]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Beatriz Ângelo Hospital Gastroenterology Department ]]></institution>
<addr-line><![CDATA[Loures ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Beatriz Ângelo Hospital Pathology Department ]]></institution>
<addr-line><![CDATA[Loures ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Beatriz Ângelo Hospital General Surgery Department ]]></institution>
<addr-line><![CDATA[Loures ]]></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>121</fpage>
<lpage>133</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452021000200121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452021000200121&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452021000200121&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Adenomyomatosis is a rare benign lesion that has been observed in different sites throughout the gastrointestinal tract, most frequently in the gallbladder. Few cases have been described in the stomach, small bowel, bile ducts, and ampullary region. Adenomyomas of the vaterian system (ampulla and common bile duct) have important clinical consequences, since the majority of these lesions presente with biliary tract obstruction and mimic malignant behavior. As a consequence, considering the diagnostic difficulty of these lesions, patients are often treated with extensive surgery (pancreaticoduodenectomy). We report 2 cases of adenomyomatosis: one of the ampulla of Vater and the other of the common bile duct, as well as a review of reported cases in the literature. Both of our patients presented with epigastralgia and had laboratory or endoscopic evidence of biliary obstruction. Both patients underwent endoscopic ultrasound, one of them with fine-needle aspiration; however, it was not possible to exclude the possibility of cancer. The diagnosis of adenomyoma was only confirmed by the surgical specimen after pancreaticoduodenectomy.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo: A adenomiomatose é uma lesão benigna rara que tem sido observada em diferentes locais do trato gastrointestinal, mais frequentemente na vesícula biliar. Poucos casos foram descritos no estômago, intestino delgado, vias biliares e ampola de Vater. Os adenomiomas do sistema de Vater (ampola e via biliar principal) têm importantes consequências clínicas, uma vez que a maioria dessas lesões se apresenta com obstrução biliar, sugerindo comportamento maligno. Como consequência, na maioria dos casos, e considerando a dificuldade diagnóstica destas lesões, os doentes são frequentemente submetidos a cirurgia extensa (pancreaticoduodenectomia). Reportamos dois casos de adenomiomatose da ampola de Vater e via biliar principal, bem como uma revisão dos casos descritos na literatura. Os doentes apresentaram-se com queixas de epigastralgia e evidência laboratorial ou endoscópica de obstrução biliar. Em ambos os casos foi realizada ultrassonografia endoscópica e em um deles punção aspirativa por agulha fina, não tendo sido possível excluir a possibilidade de malignidade. O diagnóstico de adenomioma foi apenas confirmado na peça cirúrgica após pancreaticoduodenectomia.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Adenomyomatous hyperplasia]]></kwd>
<kwd lng="en"><![CDATA[Adenomyosis]]></kwd>
<kwd lng="en"><![CDATA[Adenomyomatosis]]></kwd>
<kwd lng="en"><![CDATA[Adenomyoma]]></kwd>
<kwd lng="en"><![CDATA[Ampulla of Vater]]></kwd>
<kwd lng="en"><![CDATA[Common bile duct]]></kwd>
<kwd lng="pt"><![CDATA[Hiperplasia adenomiomatosa]]></kwd>
<kwd lng="pt"><![CDATA[Adenomiose]]></kwd>
<kwd lng="pt"><![CDATA[Adenomiomatose]]></kwd>
<kwd lng="pt"><![CDATA[Adenomioma]]></kwd>
<kwd lng="pt"><![CDATA[Ampola de Vater]]></kwd>
<kwd lng="pt"><![CDATA[Via biliar principal]]></kwd>
</kwd-group>
</article-meta>
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