<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.0 20120330//EN" "http://jats.nlm.nih.gov/publishing/1.0/JATS-journalpublishing1.dtd">
<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" article-type="research-article" dtd-version="1.0" xml:lang="en">
  <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">08975</article-id>
      <article-id pub-id-type="doi">10.4414/smf.2022.08975</article-id>
      <article-categories>
        <!-- rubric -->
        <subj-group subj-group-type="Article Type">
          <subject>Fallberichte Online</subject>
        </subj-group>
        <!-- topics -->
        <subj-group subj-group-type="Classification">
          <subject>Hämatologie</subject>
          <subject>Labormedizin</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Geldrollen und Phosphat</article-title>
      </title-group>
      <contrib-group>
        <contrib id="author-1" contrib-type="author" corresp="yes">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Fischer</surname>
            <given-names>Alessa</given-names>
          </name>
          <email>alessac.fischer@gmail.com</email>
          <aff>Assistenärztin | Medizinische Klinik | Urdorferstrasse 100 | Schlieren | 8952 | SWITZERLAND</aff>
        </contrib>
        <contrib id="author-2" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Roth</surname>
            <given-names>René</given-names>
          </name>
          <email>rene.roth@spital-limmattal.com</email>
          <aff>Medizinische Klinik</aff>
        </contrib>
        <contrib id="author-3" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Schreiber</surname>
            <given-names>Cornelia</given-names>
          </name>
          <email>cornelia.gemuenden@spital-limmattal.ch</email>
          <aff>Medizinische Klinik, Hämatologie</aff>
        </contrib>
        <contrib id="author-4" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Frick</surname>
            <given-names>Sonia</given-names>
          </name>
          <email>sonia.frick@spital-limmattal.ch</email>
          <aff>Medizinische Klinik</aff>
        </contrib>
        <contrib id="author-5" contrib-type="author" corresp="no">
          <contrib-id contrib-id-type="orcid"/>
          <name>
            <surname>Rudiger</surname>
            <given-names>Alain</given-names>
          </name>
          <email>alain.rudiger@spital-limmattal.ch</email>
          <aff>Medizinische Klinik</aff>
        </contrib>
      </contrib-group>
      <pub-date pub-type="epub" date-type="pub" iso-8601-date="2022.11.29">
        <day>29</day>
        <month>11</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>Die Hyperphosphatämie wird am häufigsten durch verminderte renale Elimination bei Niereninsuffizienz oder durch eine akute Phosphatfreisetzung bei Zelllyse verursacht. Eine sehr seltene Ursache der Hyperphosphatämie stellt die Pseudohyperphosphatämie dar, welche bei Hyperglobulinämien auftreten kann.
In einem 71.-jährigen Mann mit erhöhter Infektneigung, Anämie mit mikroskopisch starker Geldrollenbildung der Erythrozyten, akuter Niereninsuffizienz und stark erhöhtem Gesamtprotein stellten wir die Verdachtsdiagnose eines Multiplen Myelom. Im Rahmen der weiteren Diagnostik fiel ein sehr hohes anorganisches Phosphat im Serum von 12.34 mmol/l auf ohne weitere Zeichen eines Tumorlysesyndroms oder Symptome einer Hyperphosphatämie. 
Bei sehr hohen Paraproteinmengen im Serum kann es mit gängigen Analysegeräten zu Interferenzen kommen und falsch hohe Messwerte als Folge haben. Durch Verdünnung der Probe oder Proteinausfällung kann der Messwert korrigiert und unnötige Therapie verhindert werden. In unserem Patienten normalisierte sich die Pseudohyperphosphatämie in Korrelation mit sinkender Proteinlast im Serum unter Therapie mit Bortezomib, Lenalidomid und Dexamethasone (VRD).</p>
      </abstract>
    </article-meta>
  </front>
  <body/>
  <back/>
</article>
