<?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>S2341-45452022000400045</article-id>
<article-id pub-id-type="doi">10.1159/000516011</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Lymphogranuloma Venereum-Associated Proctitis Mimicking a Malignant Rectal Neoplasia: Searching for Diagnosis]]></article-title>
<article-title xml:lang="pt"><![CDATA[Proctite por linfogranuloma venéreo mimetizando uma neoplasia maligna do reto: procurar para diagnosticar]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pimentel]]></surname>
<given-names><![CDATA[Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Correia]]></surname>
<given-names><![CDATA[Catarina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Estorninho]]></surname>
<given-names><![CDATA[João]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gravito-Soares]]></surname>
<given-names><![CDATA[Elisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gravito-Soares]]></surname>
<given-names><![CDATA[Marta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueiredo]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital and University Center of Coimbra Department of Gastroenterology ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,University of Coimbra Faculty of Medicine ]]></institution>
<addr-line><![CDATA[Coimbra ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>08</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>08</month>
<year>2022</year>
</pub-date>
<volume>29</volume>
<numero>4</numero>
<fpage>45</fpage>
<lpage>50</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452022000400045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452022000400045&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452022000400045&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Chlamydia trachomatis-lymphogranuloma venereum (LGV) is a sexually transmitted infection (STI) and an uncommon cause of proctitis. The diagnosis requires a high index of clinical suspicion, since the clinical, imaging, endoscopic, and histological findings can mimic multiple benign or malignant conditions like inflammatory bowel disease and rectal neoplasms.  Case Presentation:  We present the case of a 48-year-old Caucasian male with no significant previous medical history who was admitted due to the suspicion of a rectal neoplasia. He underwent an abdominopelvic computed tomography (CT) scan and pelvic magnetic resonance imaging (MRI) before admission due to complaints of anorectal pain, hematochezia, and constipation over the previous 2 weeks. The examination revealed a circumferential rectal wall thickening, infiltration of the perirectal fat and invasion of the mesorectal fascia, associated with perirectal fat lymphadenopathy. A radiological diagnosis of a rectal malignant neoplasia staged as T4N2MX was stated. Digital rectal examination identified a circumferential rectal tumor. Rectosigmoidoscopy showed an extensive and circumferential ulceration of the rectal mucosa, with elevated geographical borders, exudate, and aphthoid erosions at the proximal limit of the endoscopic mucosal ulceration. Biopsy specimens revealed acute ulcerative proctitis with lymphoplasmocytic inflammatory infiltrate but no evidence of dysplasia or malignancy. A STI screening was positive for HIV-1 (CD4+ 251/mm3; N = 700-1,100) and C. trachomatis, with an elevated IgA-specific antibody titer (52.000; N &lt; 5.0), suggesting LGV disease. The diagnosis was confirmed by the identification of C. trachomatis DNA on rectal swab. Other infectious causes of acute proctitis were excluded. When faced with these results, the patient ended up mentioning that he had unprotected anal sex with men. He started treatment with doxycycline 100 mg twice a day for 21 days, with a drastic improvement. Rectosigmoidoscopy was repeated and showed clear signs of progressive resolution of the ulcerative proctitis.  Discussion:  LGV-associated proctitis, often undervalued, is a reemerging disease which should always be considered a benign cause of rectal mass, in order to avoid delay in diagnosis and development of complications. Diagnosis becomes more challenging in patients with unknown HIV status. A detailed clinical history, including sexual behaviors, is a vital step to achieve the final diagnosis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução: A infeção por Chlamydia trachomatis-linfogranuloma venéreo (LGV) é uma doença sexualmente transmissível (DST), sendo uma causa incomum de proctite. O diagnóstico exige um elevado grau de suspeição, dado que os achados clínicos, radiológicos, endoscópicos e histológicos podem mimetizar múltiplas condições benignas ou malignas, como a doença inflamatória intestinal e as neoplasias retais.  Caso clínico: Apresentamos o caso de um homem de 48 anos, caucasiano, sem antecedentes relevantes, admitido por suspeita de neoplasia retal. Por queixas de dor anorretal, hematoquézias e obstipação com 2 semanas de evolução, realizou uma tomografia computadorizada abdominopélvica e uma ressonância magnética pélvica, que revelaram espessamento retal circunferencial, infiltração da gordura periretal e invasão da fáscia mesoretal, associados a linfadenopatias locais, sugestivos de malignidade retal (T4N2MX). O toque retal identificou uma tumoração retal circunferencial. A retosigmoidoscopia mostrou mucosa retal com ulceração extensa e circunferencial, bordos geográficos elevados, exsudado e erosões aftóides no limite proximal da ulceração mucosa. As biópsias revelaram proctite ulcerada aguda com infiltrado linfoplasmocitário difuso, sem displasia ou neoplasia. O screening de DST foi positivo para VIH-1 (CD4+ 251/mm3; N:700-1100) e título elevado de IgA para C. trachomatis (52 000; N&lt;5), sugerindo LGV. O diagnóstico foi confirmado pela identificação do DNA de C. trachomatis em zaragatoa retal. Outras causas infecciosas de proctite aguda foram excluídas. Perante estes resultados, o doente acabou por mencionar que tinha tido relações homossexuais anais desprotegidas. Iniciou doxiciclina (100 mg duas vezes por dia, por 21 dias) com melhoria sintomática drástica. Repetiu retosigmoidoscopia, com sinais de proctite ulcerada em resolução.  Discussão:  A proctite por LGV, frequentemente desvalorizada, é uma doença re-emergente, que deve ser sempre equacionada como causa benigna de massa retal, de modo a evitar o atraso diagnóstico e o desenvolvimento de complicações. O diagnóstico torna-se mais desafiante em doentes com status VIH desconhecido. A história clínica detalhada, incluindo comportamentos sexuais de risco, é fundamental para o diagnóstico.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Chlamydia trachomatis]]></kwd>
<kwd lng="en"><![CDATA[Lymphogranuloma venereum]]></kwd>
<kwd lng="en"><![CDATA[Proctitis]]></kwd>
<kwd lng="en"><![CDATA[Rectal cancer]]></kwd>
<kwd lng="pt"><![CDATA[Chlamydia trachomatis]]></kwd>
<kwd lng="pt"><![CDATA[Linfogranuloma venéreo]]></kwd>
<kwd lng="pt"><![CDATA[Proctite]]></kwd>
<kwd lng="pt"><![CDATA[Cancro retal]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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