<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.1 20151215//EN" "https://jats.nlm.nih.gov/publishing/1.1/JATS-journalpublishing1.dtd">
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="other" dtd-version="1.1" specific-use="sps-1.7" xml:lang="en">
  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-id journal-id-type="publisher-id">abc</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia - SBC</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v3">GRsxwCtXPfFGCLQmyLpCwBc</article-id>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v2">S0066-782X2018000100101</article-id>
      <article-id pub-id-type="doi">10.5935/abc.20170138</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Image</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Cor Triatriatum Sinistrum</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Raheja</surname>
            <given-names>Hitesh</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Namana</surname>
            <given-names>Vinod</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Moskovits</surname>
            <given-names>Norbert</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Hollander</surname>
            <given-names>Gerald</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Shani</surname>
            <given-names>Jacob</given-names>
          </name>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <aff id="aff1">
          <institution content-type="orgname">Maimonides Medical Center</institution>
          <addr-line>
            <named-content content-type="state">NY</named-content>
          </addr-line>
          <country country="US">USA</country>
          <institution content-type="original">Maimonides Medical Center, NY - USA</institution>
          <institution content-type="normalized">Maimonides Medical Center</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><bold>Mailing Address: Hitesh Raheja,</bold> 864 49th st Apt B-11. 11220, Brooklyn, New York - USA. E-mail: <email>hiteshraheja88@gmail.com</email>
				</corresp>
        <fn fn-type="con">
          <p>
            <bold>Author contributions</bold>
          </p>
          <p>Conception and design of the research and writing of the manuscript: Raheja H, Namana V; Acquisition of data: Raheja H; Critical revision of the manuscript for intellectual content: Raheja H, Namana V, Moskovits N, Hollander G, Shani J.</p>
        </fn>
        <fn fn-type="conflict">
          <p>
            <bold>Potential Conflict of Interest</bold>
          </p>
          <p>No potential conflict of interest relevant to this article was reported.</p>
        </fn>
      </author-notes>
      <pub-date pub-type="epub-ppub">
        <month>01</month>
        <year>2018</year>
      </pub-date>
      <volume>110</volume>
      <issue>1</issue>
      <fpage>101</fpage>
      <lpage>101</lpage>
      <history>
        <date date-type="received">
          <day>20</day>
          <month>04</month>
          <year>2017</year>
        </date>
        <date date-type="rev-recd">
          <day>04</day>
          <month>05</month>
          <year>2017</year>
        </date>
        <date date-type="accepted">
          <day>04</day>
          <month>05</month>
          <year>2017</year>
        </date>
      </history>
      <permissions>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
          <license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="en">
        <title>Keywords:</title>
        <kwd>Cor Triatriatum</kwd>
        <kwd>Heart Defects, Congenital</kwd>
        <kwd>Echocardiography, Transesophageal</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <p>A 25-year-old male presented to clinic with complaints of palpitations. Transthoracic echocardiogram (TTE) showed presence of a membrane in left atrium suggestive of cor triatriatum [<xref ref-type="fig" rid="f1">Figure 1A</xref>]. This finding was confirmed with transesophageal echocardiogram (TEE), which revealed a membrane in the left atrium attaching at the Coumadin ridge and the atrial septum, just caudal to the fossa ovalis [<xref ref-type="fig" rid="f1">Figure 1B</xref>].</p>
    <p>
      <fig id="f1">
        <label>Figure 1</label>
        <caption>
          <title>A) Transthoracic echocardiogram showing cor triatriatum: proximal and distal left atrium separated by a membrane (Pointing white arrow), LA: left atrium; LV: left ventricle; RV: right ventricle; RA: right atrium. B) Transesophageal echocardiogram showing cor triatriatum: proximal and distal left atrium separated by a membrane (Pointing white arrow), LA: left atrium; LV: left ventricle.</title>
        </caption>
        <graphic xlink:href="1678-4170-abc-110-01-0101-70138-gf01.jpg"/></fig>
    </p>
    <p>Cor triatriatum sinistrum (CTS) is a rare congenital malformation in which the left atrium is divided into two chambers by a fenestrated fibro-muscular septum. The posterior proximal left atrial chamber receives the pulmonary veins and the anterior distal left atrial chamber contains the mitral valve and left atrial appendage. Cor triatriatum accounts for 0.1% to 0.4% of congenital heart defects. This defect generally manifests during infancy and early childhood. However, some cases present well into adulthood as in our patient. The most common presenting symptoms are dyspnea, orthopnea, hemoptysis, palpitations and chest pain. Although cor triatriatum can be an isolated lesion as in our patient, it is frequently associated with other congenital cardiovascular anomalies, most often ASD. Echocardiography is the mainstay for diagnosis. CTS is first suspected by the presence of a linear structure in the left atrium on TTE. TEE is used for better visualization of the membrane, measurement of gradients across the membrane and to recognize ASD. In symptomatic patients, management consists of resection of the diaphragm and correction of the associated congenital heart defects. Conservative approach is often implemented in asymptomatic adults.</p>
  </body>
  <back>
    <fn-group>
      <fn fn-type="financial-disclosure">
        <p>
          <bold>Sources of Funding</bold>
        </p>
        <p>There were no external funding sources for this study.</p>
      </fn>
      <fn fn-type="other">
        <p>
          <bold>Study Association</bold>
        </p>
        <p>This article is part of the Internal Medicine Residency submitted by Hitesh Raheja, from Maimonides Medical Center, NY - USA.</p>
      </fn>
    </fn-group>
  </back>
  <sub-article article-type="translation" id="s1" xml:lang="pt">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Imagem</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Cor Triatriatum Sinistrum</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Raheja</surname>
            <given-names>Hitesh</given-names>
          </name>
          <xref ref-type="aff" rid="aff2"/>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Namana</surname>
            <given-names>Vinod</given-names>
          </name>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Moskovits</surname>
            <given-names>Norbert</given-names>
          </name>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Hollander</surname>
            <given-names>Gerald</given-names>
          </name>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Shani</surname>
            <given-names>Jacob</given-names>
          </name>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
        <aff id="aff2">
          <institution content-type="original">Maimonides Medical Center, NY - USA</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><bold>Correspond&#234;ncia: Hitesh Raheja,</bold> 864 49th st Apt B-11. 11220, Brooklyn, New York - USA. E-mail: <email>hiteshraheja88@gmail.com</email>
				</corresp>
        <fn fn-type="con">
          <p>
            <bold>Contribui&#231;&#227;o dos autores</bold>
          </p>
          <p>Concep&#231;&#227;o e desenho da pesquisa e Reda&#231;&#227;o do manuscrito: Raheja H, Namana V; Obten&#231;&#227;o de dados: Raheja H; Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do intelectual importante: Raheja H, Namana V, Moskovits N, Hollander G, Shani J.</p>
        </fn>
        <fn fn-type="conflict">
          <p>
            <bold>Potencial conflito de interesses</bold>
          </p>
          <p>Declaro n&#227;o haver conflito de interesses pertinentes.</p>
        </fn>
      </author-notes>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave:</title>
        <kwd>Cora&#231;&#227;o Triatriado</kwd>
        <kwd>Cardiopatias Cong&#234;nitas</kwd>
        <kwd>Ecocardiografia Transesofagiana</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Um homem de 25 anos apresentou-se &#224; cl&#237;nica com queixas de palpita&#231;&#245;es. O ecocardiograma transtor&#225;cico (ETE) mostrou presen&#231;a de membrana no &#225;trio esquerdo sugestiva de cor triatriatum (cora&#231;&#227;o triatrial) [<xref ref-type="fig" rid="f2">Figura 1A</xref>]. Esse achado foi confirmado com ecocardiograma transesof&#225;gico (ETE), que revelou uma membrana no &#225;trio esquerdo que se fixa na crista de Coumadin e no septo atrial, apenas caudal &#224; fossa ovalis [<xref ref-type="fig" rid="f2">Figura 1B</xref>].</p>
      <p>
        <fig id="f2">
          <label>Figura 1</label>
          <caption>
            <title>A) Ecocardiograma transtor&#225;cico mostrando cor triatriatum: &#225;trio esquerdo proximal e distal separado por uma membrana (Seta branca apontando), AE: &#225;trio esquerdo; VE: ventr&#237;culo esquerdo; VD: ventr&#237;culo direito; AD: &#225;trio direito. B) Ecocardiograma transesof&#225;gico mostrando cor triatriatum: &#225;trio esquerdo proximal e distal separado por uma membrana (seta branca apontando), AE: &#225;trio esquerdo; VE: ventr&#237;culo esquerdo.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-110-01-0101-70138-gf01-pt.jpg"/></fig>
      </p>
      <p>Cor triatriatum sinistrum (CTS) &#233; uma malforma&#231;&#227;o cong&#234;nita rara na qual o &#225;trio esquerdo &#233; dividido em duas c&#226;maras por um septo fibromuscular fenestrado. A c&#226;mara do &#225;trio esquerdo proximal posterior recebe as veias pulmonares e a c&#226;mara distal do &#225;trio esquerdo anterior cont&#233;m a v&#225;lvula mitral e o ap&#234;ndice atrial esquerdo. Cor triatriatum responde por 0,1% a 0,4% das cardiopatias cong&#234;nitas. Esse defeito geralmente se manifesta durante a inf&#226;ncia e na primeira inf&#226;ncia. No entanto, alguns casos apresentam-se bem na idade adulta como em nosso paciente. Os sintomas mais comuns s&#227;o dispneia, ortopneia, hemoptise, palpita&#231;&#245;es e dor tor&#225;cica. Embora cor triatriatum possa ser uma les&#227;o isolada como em nosso paciente, &#233; frequentemente associado com outras anomalias cardiovasculares cong&#234;nitas, a maioria CIA. A ecocardiograf&#237;a &#233; o pilar do diagn&#243;stico. O CTS &#233; suspeitado pela presen&#231;a de uma estrutura linear no &#225;trio esquerdo no ETE. O ETE &#233; usado para melhor visualiza&#231;&#227;o da membrana, medi&#231;&#227;o de gradientes atrav&#233;s da membrana e para reconhecer CIA. Em pacientes sintom&#225;ticos, o tratamento consiste na ressec&#231;&#227;o do diafragma e na corre&#231;&#227;o das cardiopatias cong&#234;nitas associadas. A abordagem conservadora &#233; muitas vezes implementada em adultos assintom&#225;ticos.</p>
    </body>
    <back>
      <fn-group>
        <fn fn-type="financial-disclosure">
          <p>
            <bold>Fontes de financiamento</bold>
          </p>
          <p>O presente estudo n&#227;o teve fontes de financiamento externas.</p>
        </fn>
        <fn fn-type="other">
          <p>
            <bold>Vincula&#231;&#227;o acad&#234;mica</bold>
          </p>
          <p>Este artigo &#233; parte da Resid&#234;ncia M&#233;dica de Hitesh Raheja pela Maimonides Medical Center, NY - USA.</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
