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      <h1 class="highwire-cite-title" id="page-title">Cystic Intraventricular Solitary Fibrous Tumor</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">Frédéric Clarençon</span>, <span class="highwire-citation-author" data-delta="1">Fabrice Bonneville</span>, <span class="highwire-citation-author" data-delta="2">Jacques Chiras</span>, <span class="highwire-citation-author" data-delta="3">Michèle Kujas</span> and <span class="highwire-citation-author" data-delta="4">Philippe Cornu</span></span></div>
  
    	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-journal highwire-cite-metadata">American Journal of Neuroradiology </span><span  class="highwire-cite-metadata-date highwire-cite-metadata">August 2007,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">28 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(7) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1205-1206; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A0572 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-7467--6672161096" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">Frédéric Clarençon </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Fr%C3%A9d%C3%A9ric%2BClaren%C3%A7on%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Claren%C3%A7on%20F&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AFr%25C3%25A9d%25C3%25A9ric%2BClaren%25C3%25A7on%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">Fabrice Bonneville </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Fabrice%2BBonneville%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Bonneville%20F&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AFabrice%2BBonneville%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">Jacques Chiras </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Jacques%2BChiras%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Chiras%20J&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AJacques%2BChiras%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-3"><div class="author-tooltip-name">Michèle Kujas </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Mich%C3%A8le%2BKujas%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Kujas%20M&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3AMich%25C3%25A8le%2BKujas%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">Philippe Cornu </div><ul class="author-tooltip-find-more"><li class="author-tooltip-gs-link first"><a href="/lookup/google-scholar?link_type=googlescholar&amp;gs_type=author&amp;author%5B0%5D=Philippe%2BCornu%2B" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on Google Scholar</a></li><li class="author-tooltip-pubmed-link"><a href="/lookup/external-ref?access_num=Cornu%20P&amp;link_type=AUTHORSEARCH" target="_blank" class="" data-icon-position="" data-hide-link-title="0">Find this author on PubMed</a></li><li class="author-site-search-link last"><a href="/search/author1%3APhilippe%2BCornu%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li></ul></div></div></div>  </div>

  
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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" data-highwire-cite-ref-tooltip-instance="highwire_reflinks_tooltip" class="content-block-markup" xmlns:xhtml="http://www.w3.org/1999/xhtml"><div class="article fulltext-view"><span class="highwire-journal-article-marker-start"></span><p id="p-1">We read with interest the article by Surendrababu et al<sup><a id="xref-ref-1-1" class="xref-bibr" href="#ref-1">1</a></sup> about an unusual case of a solitary fibrous tumor (SFT) located at the atrium of the left lateral ventricle in an adult. Although rare, intraventricular SFTs have been described previously in the lateral ventricles, the third and fourth ventricles,<sup><a id="xref-ref-2-1" class="xref-bibr" href="#ref-2">2</a>,<a id="xref-ref-3-1" class="xref-bibr" href="#ref-3">3</a></sup> where they certainly develop from the perivascular connective tissue of the choroid plexus. Preoperative diagnosis is challenging, because highly specific imaging features of SFTs have not been described. Surendrababu et al<sup><a id="xref-ref-1-2" class="xref-bibr" href="#ref-1">1</a></sup> emphasize that SFTs are hyperintense on T2-weighted images. To the contrary, we think that they should have placed greater emphasis on the diagnostic value of SFT low T2 signal intensity. The lack of MR images in their case is troubling, because MR imaging may have demonstrated this important differential diagnostic feature. Indeed, low T2 signal intensity, corresponding with areas composed of interlacing bundles of spindle cells<sup><a id="xref-ref-4-1" class="xref-bibr" href="#ref-4">4</a></sup> or collagenous septations,<sup><a id="xref-ref-3-2" class="xref-bibr" href="#ref-3">3</a></sup> has frequently been reported in SFTs and is considered to be a suggestive feature of the diagnosis.<sup><a id="xref-ref-3-3" class="xref-bibr" href="#ref-3">3</a>–<a id="xref-ref-5-1" class="xref-bibr" href="#ref-5">5</a></sup> We agree with the authors, however, that MR patterns of SFTs are variable, including T2 hyperintensity and/or cystic component, even when the mass is intraventricular.</p><p id="p-2">To reinforce this idea, we illustrate the case of a 44-year-old woman with a multicystic SFT in the right lateral ventricle who presented with right retro-orbital pain and seizure. This multiloculated mass was hypointense on T1-weighted images, hyperintense on T2-weighted images, and demonstrated thin peripheral enhancement of multiple confluent cysts after gadolinium administration (<a id="xref-fig-1-1" class="xref-fig" href="#F1">Fig 1<em>A</em></a>). Histopathologic examination showed spindle cells, and immunohis-tochemistry was strongly positive for CD34, confirming the diagnosis of SFT (<a id="xref-fig-1-2" class="xref-fig" href="#F1">Fig 1<em>B</em></a>). The case described by Surendrababu et al<sup><a id="xref-ref-1-3" class="xref-bibr" href="#ref-1">1</a></sup> and ours both emphasize the fact that intracranial SFT is an emerging entity that is diagnosed more frequently, especially in the cerebral ventricles. It is important to understand and recognize the protean nature and imaging polymorphism of this tumor.</p><p id="p-3">
      
    </p><div id="F1" class="fig pos-float odd"><div class="highwire-figure"><div class="fig-inline-img-wrapper"><div class="fig-inline-img"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/28/7/1205.2/F1.large.jpg?width=800&amp;height=600&amp;carousel=1" title="A, Axial contrast-enhanced T1-weighted image shows a multiloculated cystic solitary fibrous tumor in the right lateral ventricle.B, Histologic examination demonstrates marked anti-CD34 immunopositivity." class="highwire-fragment fragment-images colorbox-load" rel="gallery-fragment-images-1099467891" data-figure-caption="&lt;div class=&quot;highwire-markup&quot;&gt;A, Axial contrast-enhanced T1-weighted image shows a multiloculated cystic solitary fibrous tumor in the right lateral ventricle.B, Histologic examination demonstrates marked anti-CD34 immunopositivity.&lt;/div&gt;" data-icon-position="" data-hide-link-title="0"><span class="hw-responsive-img"><img class="highwire-fragment fragment-image lazyload" alt="  Fig 1. " src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://ajnr-stage2.stage.highwire.org/content/ajnr/28/7/1205.2/F1.medium.gif" width="440" height="218"/><noscript><img class="highwire-fragment fragment-image" alt="  Fig 1. " src="http://ajnr-stage2.stage.highwire.org/content/ajnr/28/7/1205.2/F1.medium.gif" width="440" height="218"/></noscript></span></a></div></div><ul class="highwire-figure-links inline"><li class="download-fig first"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/28/7/1205.2/F1.large.jpg?download=true" class="highwire-figure-link highwire-figure-link-download" title="Download    Fig 1.   " data-icon-position="" data-hide-link-title="0">Download figure</a></li><li class="new-tab"><a href="http://ajnr-stage2.stage.highwire.org/content/ajnr/28/7/1205.2/F1.large.jpg" class="highwire-figure-link highwire-figure-link-newtab" target="_blank" data-icon-position="" data-hide-link-title="0">Open in new tab</a></li><li class="download-ppt last"><a href="/highwire/powerpoint/21737" class="highwire-figure-link highwire-figure-link-ppt" data-icon-position="" data-hide-link-title="0">Download powerpoint</a></li></ul></div><div class="fig-caption" xmlns:xhtml="http://www.w3.org/1999/xhtml"><span class="fig-label">
          <strong>Fig 1.</strong>
        </span> <p id="p-4" class="first-child"><em>A</em>, Axial contrast-enhanced T1-weighted image shows a multiloculated cystic solitary fibrous tumor in the right lateral ventricle.</p><p id="p-5"><em>B</em>, Histologic examination demonstrates marked anti-CD34 immunopositivity.</p><div class="sb-div caption-clear"></div></div></div><div class="section ack" id="ack-1"><h2>Acknowledgments</h2><p id="p-6">We are indebted to David Seidenwurm, MD, for his help in writing this letter.</p></div><div class="section ref-list" id="ref-list-1"><h2>References</h2><ol class="cit-list"><li><a class="rev-xref-ref" href="#xref-ref-1-1" title="View reference 1 in text" id="ref-1">↵</a><div class="cit ref-cit ref-other" id="cit-28.7.1205-b.1"><div class="cit-metadata"><cite>Surendrababu NR, Chacko G, Daniel RT, et al. <strong>Solitary fibrous tumor of the lateral ventricle: CT appearances and pathologic correlation with follow-up.</strong> <span class="cit-source">AJNR Am J Neuroradiol</span> <span class="cit-pub-date">2006</span>;<span class="cit-vol">27</span>:<span class="cit-fpage">2135</span>–36</cite></div><div class="cit-extra"><a href="/lookup/ijlink/YTozOntzOjQ6InBhdGgiO3M6MTQ6Ii9sb29rdXAvaWpsaW5rIjtzOjU6InF1ZXJ5IjthOjQ6e3M6ODoibGlua1R5cGUiO3M6NDoiQUJTVCI7czoxMToiam91cm5hbENvZGUiO3M6NDoiYWpuciI7czo1OiJyZXNpZCI7czoxMDoiMjcvMTAvMjEzNSI7czo0OiJhdG9tIjtzOjIyOiIvYWpuci8yOC83LzEyMDUuMi5hdG9tIjt9czo4OiJmcmFnbWVudCI7czowOiIiO30=" class="cit-ref-sprinkles cit-ref-sprinkles-ijlink"><span><span class="cit-reflinks-abstract">Abstract</span><span class="cit-sep cit-reflinks-variant-name-sep">/</span><span class="cit-reflinks-full-text"><span class="free-full-text">FREE </span>Full Text</span></span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-2-1" title="View reference 2 in text" id="ref-2">↵</a><div class="cit ref-cit ref-other" id="cit-28.7.1205-b.2"><div class="cit-metadata"><cite>Kocak A, Cayli SR, Sarac K, et al. <strong>Intraventricular solitary fibrous tumor: an unusual tumor with radiological, ultrastructural, and immunohistochemical evaluation: case report.</strong> <span class="cit-source">Neurosurgery</span> <span class="cit-pub-date">2004</span>;<span class="cit-vol">54</span>:<span class="cit-fpage">213</span>–16</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=14683560&amp;link_type=MED&amp;atom=%2Fajnr%2F28%2F7%2F1205.2.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-3-1" title="View reference 3 in text" id="ref-3">↵</a><div class="cit ref-cit ref-other" id="cit-28.7.1205-b.3"><div class="cit-metadata"><cite>Clarençon F, Bonneville F, Sichez JP, et al. <strong>Atypical location of a solitary fibrous tumor in the fourth ventricle.</strong> <span class="cit-source">J Neuroradiol</span> <span class="cit-pub-date">2006</span>;<span class="cit-vol">33</span>:<span class="cit-fpage">279</span>–80</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=17041540&amp;link_type=MED&amp;atom=%2Fajnr%2F28%2F7%2F1205.2.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-4-1" title="View reference 4 in text" id="ref-4">↵</a><div class="cit ref-cit ref-other" id="cit-28.7.1205-b.4"><div class="cit-metadata"><cite>Sa G, Bonneville F, Poirier J, et al. <strong>Giant solitary fibrous tumour of the meninges: MR-pathological correlation.</strong> <span class="cit-source">J Neuroradiol</span> <span class="cit-pub-date">2006</span>;<span class="cit-vol">33</span>:<span class="cit-fpage">343</span>–46</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=17213762&amp;link_type=MED&amp;atom=%2Fajnr%2F28%2F7%2F1205.2.atom" class="cit-ref-sprinkles cit-ref-sprinkles-medline"><span>PubMed</span></a></div></div></li><li><a class="rev-xref-ref" href="#xref-ref-5-1" title="View reference 5 in text" id="ref-5">↵</a><div class="cit ref-cit ref-other" id="cit-28.7.1205-b.5" data-doi="10.2176/nmc.40.432"><div class="cit-metadata"><cite>Nawashiro H, Nagakawa S, Osada H, et al. <strong>Solitary fibrous tumor of the meninges in the posterior cranial fossa: magnetic resonance imaging and histological correlation–case report.</strong> <span class="cit-source">Neurol Med Chir</span> <span class="cit-pub-date">2000</span>;<span class="cit-vol">40</span>:<span class="cit-fpage">432</span>–34</cite></div><div class="cit-extra"><a href="/lookup/external-ref?access_num=10.2176/nmc.40.432&amp;link_type=DOI" class="cit-ref-sprinkles cit-ref-sprinkles-doi cit-ref-sprinkles-crossref"><span>CrossRef</span></a></div></div></li></ol></div><ul class="copyright-statement"><li class="fn" id="copyright-statement-1">Copyright © American Society of Neuroradiology</li></ul><span class="highwire-journal-article-marker-end"></span></div><span class="related-urls"></span></div></div>  </div>

  
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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 28</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 7 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">August 2007 </div></div>
      
      
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