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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="case-report" dtd-version="1.1" specific-use="sps-1.8" 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">9XcdzzhsTkQLmmZzNF4dbsj</article-id>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v2">S0066-782X2018001400226</article-id>
      <article-id pub-id-type="doi">10.5935/abc.20180110</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Image</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Unexpected Mass in the Left Atrium</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Guimar&#227;es</surname>
            <given-names>Tatiana</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pl&#225;cido</surname>
            <given-names>Rui</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Quadros</surname>
            <given-names>Ana Catarina</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Costa</surname>
            <given-names>Jos&#233; Marques da</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pinto</surname>
            <given-names>Fausto J.</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
      </contrib-group>
      <aff id="aff1">
        <label>1</label>
        <institution content-type="orgname">University of Lisbon</institution>
        <institution content-type="orgdiv1">Faculty of Medicine</institution>
        <addr-line>
          <city>Lisboa</city>
        </addr-line>
        <country country="PT">Portugal</country>
        <institution content-type="original">Cardiology Department, Santa Maria University Hospital, CHLN, CAML, CCUL, Faculty of Medicine, University of Lisbon, Lisboa &#8211; Portugal</institution>
      </aff>
      <aff id="aff2">
        <label>2</label>
        <institution content-type="orgname">University of Lisbon</institution>
        <institution content-type="orgdiv1">Faculty of Medicine</institution>
        <addr-line>
          <city>Lisboa</city>
        </addr-line>
        <country country="PT">Portugal</country>
        <institution content-type="original">Anatomopathology Department, Santa Maria University Hospital, CHLN, Faculty of Medicine, University of Lisbon, Lisboa &#8211; Portugal</institution>
      </aff>
      <author-notes>
        <corresp id="c1"><bold>Mailing Address: Tatiana Guimar&#227;es</bold> Servi&#231;o de Cardiologia, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte - Av. Prof. Egas Moniz, 1649-035 Lisbon &#8211; Portugal E-mail: <email>tatiana.oliveira.guimaraes@gmail.com</email>
				</corresp>
        <fn fn-type="con">
          <p>
            <bold>Author contributions</bold>
          </p>
          <p>Writing of the manuscript: Guimar&#227;es TIO; Critical revision of the manuscript for intellectual content: Pl&#225;cido R, Quadros AC, Costa JM, Pinto FJ.</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>08</month>
        <year>2018</year>
      </pub-date>
      <volume>111</volume>
      <issue>2</issue>
      <fpage>226</fpage>
      <lpage>227</lpage>
      <history>
        <date date-type="received">
          <day>09</day>
          <month>11</month>
          <year>2017</year>
        </date>
        <date date-type="rev-recd">
          <day>26</day>
          <month>02</month>
          <year>2018</year>
        </date>
        <date date-type="accepted">
          <day>26</day>
          <month>02</month>
          <year>2018</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>Heart Atria Heart Neoplasms/surgery</kwd>
        <kwd>Leukemia,Lymphoid/physiopathology</kwd>
        <kwd>Mitral Valve Stenosis</kwd>
        <kwd>Echocardiography</kwd>
        <kwd>Coronary Angiography</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <p>A 60-year-old Caucasian female with a history of rheumatic mitral stenosis, permanent atrial fibrillation and chronic lymphocytic leukemia was admitted due to decompensated chronic heart failure. The transthoracic echocardiogram depicted a severe mitral stenosis (anatomic valve area of 0.9 cm<sup>2</sup>), mild mitral regurgitation, aneurysmatic left atrium and mildly compromised left ventricular ejection fraction. Given the indication for mitral valve replacement, coronary angiography was performed, revealing an abnormal vascularized mass at the level of the left atrium beyond normal coronary arteries (Panel A). For better characterization an angio-CT was requested. A well-delimited, 7x4x3cm left atrial homogeneous, slight hyperdense mass was observed along the lateral portion of the atrial roof (Panel B and C). The patient underwent both surgical mass resection and mitral valve replacement with an uneventful recovery. The pathological analysis showed a multifocal left atrial wall and pericardial fat infiltration with CD20+, CD5 +, bcl-2+, cyclin D1+, CD10- and CD23- lymphoid cells, in addition to a left atrial adherent thrombus (Panels D-I<italic>)</italic>. These findings were compatible with lymphocytic lymphoma/chronic lymphocytic leukemia and the patient remains clinically stable. </p>
    <p>Secondary or metastatic tumors are much more common than primary tumors of the heart. A recent necropsy study revealed that cardiac metastases in patients with leukemia and lymphomas may be present in 25% of patients.<xref ref-type="bibr" rid="B1">1</xref> Despite being mostly clinically silent, cardiac imaging improvements and availability has led to increased incidental recognition and awareness.</p>
    <p>
      <fig id="f1">
        <label>Figure 1</label>
        <caption>
          <title>(Panel A) Selective left coronary angiogram (left anterior oblique 30&#176; position) showing an abnormal vascularized mass (arrow) in the left atrium. (Panel B and C) Coronal and axial angio-CT planes in arterial phase, respectively, demonstrating a well-delimited, homogeneous and slight hyperdense mass, along the lateral portion of the atrial roof. (Panel D) Recent thrombus, partially in organization (H&amp;E 20x). (E and F) Myocardium and adipose tissue infiltrated by small lymphoid cells, with scant cytoplasm and nuclei with peripherally clumped chromatin (H&amp;E 20x and 400x). (Panel G-I) CD20, CD5 and bcl2 immunoreactivity (400x), respectively.</title>
        </caption>
        <graphic xlink:href="1678-4170-abc-111-02-0226-80110-gf01.jpg"/></fig>
    </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 study is not associated with any thesis or dissertation work.</p>
      </fn>
    </fn-group>
    <ref-list>
      <title>Reference</title>
      <ref id="B1">
        <label>1</label>
        <mixed-citation>1 Reynen R, Kocheritz U, Strasser RN. Metastases to the heart. Ann Oncol. 2004;15(3):375-81.</mixed-citation>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Reynen</surname>
              <given-names>R</given-names>
            </name>
            <name>
              <surname>Kocheritz</surname>
              <given-names>U</given-names>
            </name>
            <name>
              <surname>Strasser</surname>
              <given-names>RN</given-names>
            </name>
          </person-group>
          <article-title>Metastases to the heart</article-title>
          <source>Ann Oncol</source>
          <year>2004</year>
          <volume>15</volume>
          <issue>3</issue>
          <fpage>375</fpage>
          <lpage>381</lpage>
        </element-citation>
      </ref>
    </ref-list>
  </back>
  <sub-article article-type="translation" id="s1" xml:lang="pt">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Image</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Massa Inesperada no &#193;trio Esquerdo</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Guimar&#227;es</surname>
            <given-names>Tatiana</given-names>
          </name>
          <xref ref-type="aff" rid="aff3">1</xref>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pl&#225;cido</surname>
            <given-names>Rui</given-names>
          </name>
          <xref ref-type="aff" rid="aff3">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Quadros</surname>
            <given-names>Ana Catarina</given-names>
          </name>
          <xref ref-type="aff" rid="aff4">2</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Costa</surname>
            <given-names>Jos&#233; Marques da</given-names>
          </name>
          <xref ref-type="aff" rid="aff3">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Pinto</surname>
            <given-names>Fausto J.</given-names>
          </name>
          <xref ref-type="aff" rid="aff3">1</xref>
        </contrib>
      </contrib-group>
      <aff id="aff3">
        <label>1</label>
        <institution content-type="original">Cardiology Department, Santa Maria University Hospital, CHLN, CAML, CCUL, Faculty of Medicine, University of Lisbon, Lisboa &#8211; Portugal</institution>
      </aff>
      <aff id="aff4">
        <label>2</label>
        <institution content-type="original">Anatomopathology Department, Santa Maria University Hospital, CHLN, Faculty of Medicine, University of Lisbon, Lisboa &#8211; Portugal</institution>
      </aff>
      <author-notes>
        <corresp id="c2"><bold>Correspond&#234;ncia: Tatiana Guimar&#227;es</bold> Servi&#231;o de Cardiologia, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte - Av. Prof. Egas Moniz, 1649-035 Lisboa &#8211; Portugal E-mail: <email>tatiana.oliveira.guimaraes@gmail.com</email>
				</corresp>
        <fn fn-type="con">
          <p>
            <bold>Contribui&#231;&#227;o dos autores</bold>
          </p>
          <p>Reda&#231;&#227;o do manuscrito: Guimar&#227;es TIO; Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do intelectual importante: Pl&#225;cido R, Quadros AC, Costa JM, Pinto FJ.</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>&#193;trios Card&#237;acos</kwd>
        <kwd>Neoplasias Card&#237;acas/cirurgia</kwd>
        <kwd>Leucemia Linf&#243;ide/fisiopatologia</kwd>
        <kwd>Estenose da Valva Mitral</kwd>
        <kwd>Ecocardiografia</kwd>
        <kwd>Angiografia Coron&#225;ria</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Uma mulher branca de 60 anos de idade, com hist&#243;ria de estenose mitral reum&#225;tica, fibrila&#231;&#227;o atrial permanente e leucemia linfoc&#237;tica cr&#244;nica foi internada devido &#224; insufici&#234;ncia card&#237;aca cr&#244;nica descompensada. O ecocardiograma transtor&#225;cico mostrou estenose mitral grave (&#225;rea valvar anat&#244;mica de 0,9 cm<sup>2</sup>), insufici&#234;ncia mitral leve, &#225;trio esquerdo aneurism&#225;tico e fra&#231;&#227;o de eje&#231;&#227;o do ventr&#237;culo esquerdo levemente comprometida. Dada a indica&#231;&#227;o de substitui&#231;&#227;o valvar mitral, uma angiografia coronariana foi realizada, revelando a presen&#231;a de uma massa vascularizada anormal ao n&#237;vel do &#225;trio esquerdo al&#233;m das art&#233;rias coron&#225;rias normais (Painel A). Para melhor caracteriza&#231;&#227;o, uma angiotomografia foi solicitada. Foi identificada uma massa discreta hiperdensa, homog&#234;nea, de 7x4x3cm, bem delimitada, ao longo da por&#231;&#227;o lateral do teto atrial (Pain&#233;is B e C). A paciente foi submetida &#224; ressec&#231;&#227;o cir&#250;rgica da massa e troca valvar mitral, apresentando recupera&#231;&#227;o sem intercorr&#234;ncias. A an&#225;lise anatomopatol&#243;gica mostrou parede atrial esquerda multifocal e infiltra&#231;&#227;o de gordura peric&#225;rdica com c&#233;lulas linfoides CD20+, CD5+, bcl-2+, ciclina D1+, CD10 e CD23-, al&#233;m de trombo aderente atrial esquerdo (Pain&#233;is D-I). Esses achados foram compat&#237;veis com linfoma linfoc&#237;tico / leucemia linfoc&#237;tica cr&#244;nica e a paciente permanece clinicamente est&#225;vel.</p>
      <p>Os tumores secund&#225;rios ou metast&#225;ticos s&#227;o muito mais comuns que os tumores prim&#225;rios do cora&#231;&#227;o. Um recente estudo de necropsia revelou que met&#225;stases card&#237;acas em pacientes com leucemia e linfomas podem estar presentes em 25% dos pacientes.<xref ref-type="bibr" rid="B1">1</xref> Embora a maioria desses tumores seja clinicamente silenciosa, a melhora e a disponibilidade de imagens card&#237;acas levaram ao aumento da identifica&#231;&#227;o incidental e conscientiza&#231;&#227;o.</p>
      <p>
        <fig id="f2">
          <label>Figura 1</label>
          <caption>
            <title>(Painel A) Angiografia coron&#225;ria esquerda seletiva (posi&#231;&#227;o obl&#237;qua anterior esquerda de 30&#176;) mostrando massa vascularizada anormal (seta) no &#225;trio esquerdo. (Pain&#233;is B e C) Planos coronais e axiais da angiotomografia na fase arterial, respectivamente, demonstrando massa bem delimitada, homog&#234;nea e levemente hiperdensa, ao longo da por&#231;&#227;o lateral do teto atrial. (Painel D) Trombo recente parcialmente em organiza&#231;&#227;o (H&amp;E 20x). (Pain&#233;is E e F) Mioc&#225;rdio e tecido adiposo infiltrados por pequenas c&#233;lulas linfoides, com citoplasma escasso e n&#250;cleos com cromatina condensada perifericamente (H&amp;E 20x e 400x). (Pain&#233;is G a I) Imunorreatividade para CD20, CD5 e bcl2 (400x), respectivamente.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-111-02-0226-80110-gf01-pt.jpg"/></fig>
      </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>N&#227;o h&#225; vincula&#231;&#227;o deste estudo a programas de p&#243;s-gradua&#231;&#227;o.</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
