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  <front>
    <journal-meta>
      <journal-id journal-id-type="publisher-id">SMF</journal-id>
      <journal-title-group>
        <journal-title>Schweizerisches Medizin-Forum</journal-title>
      </journal-title-group>
      <issn pub-type="epub">1424-4020</issn>
      <issn pub-type="ppub">1424-3784</issn>
      <publisher>
        <publisher-name>EMH Schweizerischer Ärzteverlag AG</publisher-name>
        <publisher-loc>Farnsburgerstrasse 8
CH-4132 Muttenz</publisher-loc>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id">08680</article-id>
      <article-id pub-id-type="doi">10.4414/smf.2022.08680</article-id>
      <article-categories>
        <!-- rubric -->
        <subj-group subj-group-type="Article Type">
          <subject>Fallberichte Online</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Chronischer Durchfall als Leitsymptom der AL-Amyloidose</article-title>
      </title-group>
      <contrib-group>
        <contrib id="author-1" contrib-type="author" corresp="yes">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Mersini</surname>
            <given-names>Besnik</given-names>
          </name>
          <email>b.mersini@hotmail.com</email>
          <aff>Arzt | Chirurgie | Im Chlösterli 21 | Urdorf | 8902 | SWITZERLAND</aff>
        </contrib>
        <contrib id="author-2" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Wallner</surname>
            <given-names>Julia</given-names>
          </name>
          <email/>
          <aff>Klinik für Innere Medizin, Kantonsspital Winterthur</aff>
        </contrib>
        <contrib id="author-3" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Goede</surname>
            <given-names>Jeroen S.</given-names>
          </name>
          <email/>
          <aff>Medizinische Onkologie und Hämatologie, Kantonsspital Winterthur</aff>
        </contrib>
      </contrib-group>
      <pub-date pub-type="epub" date-type="pub" iso-8601-date="2022.01.17">
        <day>17</day>
        <month>01</month>
        <year>2022</year>
      </pub-date>
      <volume>22</volume>
      <issue>00</issue>
      <fpage>0</fpage>
      <lpage>0</lpage>
      <permissions>
        <copyright-statement>Copyright: EMH Schweizerischer Ärzteverlag AG</copyright-statement>
        <copyright-year>2022</copyright-year>
        <copyright-holder>EMH Schweizerischer Ärzteverlag AG</copyright-holder>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by-nc-nd/4.0/">
          <license-p>"Swiss Medical Forum" is an open access publication of EMH published in accordance with the terms of the Creative Commons licence attribution - NonCommercial - NoDerivatives 4.0 International. You are free to share, copy and redistribute the material in any medium or format under the following terms:</license-p>
          <license-p>Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.</license-p>
          <license-p>NonCommercial — You may not use the material for commercial purposes.</license-p>
          <license-p>NoDerivatives — If you remix, transform, or build upon the material, you may not distribute the modified material.</license-p>
          <license-p>"Non-commercial" means not primarily intended for or directed towards commercial advantage or monetary compensation. The incorporation of publications in commercial products, the use of publications to advertise for commercial products or services and any other usage that directly or indirectly pursues commercial interests is subject to the express previous consent of the publishing house as part of a written agreement.</license-p>
          <license-p>Please send us your request in writing. Exact indication of the publication from which you would like to reproduce material and detailed information about its intended use help to facilitate and expedite request processing.</license-p>
        </license>
      </permissions>
      <abstract abstract-type="article" xml:lang="de">
        <p>Zusammenfassung 
Eine Leichtketten (AL)-Amyloidose wird häufig in einem fortgeschrittenen Stadium diagnostiziert. Die organbezogenen Symptome treten erst bei relevanter Amyloidablagerung im entsprechenden Gewebe auf. So wurde auch bei unserem Patienten die Diagnose erst im Kontext einer ausgeprägten Proteinurie im nephrotischen Bereich (7.4g/d) gestellt. Sein Leitsymptom war chronischer Durchfall. Eine infektiöse oder entzündliche Ursache des Durchfalls wurde serologisch, endoskopisch und bioptisch ausgeschlossen. Die Diagnose konnte schliesslich in der Nieren- und Knochenmarkbiopsie gestellt werden. Auch in den Biopsien aus dem Gastrointestinaltrakt konnte nachträglich mittels Kongorot-Färbung eine Amyloidablagerung der kleinen Gefässe nachgewiesen werden.</p>
      </abstract>
    </article-meta>
  </front>
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