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<meta name="DC.Title" content="Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor" />
<meta name="DC.Identifier" content="10.3174/ajnr.A1526" />
<meta name="DC.Date" content="2009-06-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Meningeal inflammatory myofibroblastic tumor (IMT) has been rarely reported, and its prognosis is still unclear. Our purpose was to describe the imaging features of patients with meningeal IMT and their results on follow-up studies.

MATERIALS AND METHODS: Twenty-four MR images in 10 consecutive patients with pathologically proved meningeal IMTs were retrospectively evaluated, focusing on the lesion distribution, signal intensity (SI), and contrast-enhancement pattern with a review of the clinical records.

RESULTS: Eight patients with intracranial IMT showed localized ( n = 4) or diffuse ( n = 4) dural thickening, a single mass ( n = 5) or 2 ( n = 2) dural-based masses with surrounding edema, dural venous sinus thrombosis ( n = 5), and leptomeningeal involvement ( n = 5). Extracranial involvement of the mastoid ( n = 2) and orbit ( n = 2) was also associated. Each of the 2 patients with intraspinal IMT showed a dural-based mass and a segmental dural thickening, respectively. All of the thickened dura showed low SI on T2-weighted images, iso-SI on T1-weighted images, and diffuse contrast enhancement. Variable recurrences with dural-based masses, mastoid involvement, or nasolacrimal duct involvement were observed in all 4 patients with diffuse intracranial IMT, but not in the others.

CONCLUSIONS: Localized or diffuse dural thickening of T2 low SI and diffuse contrast enhancement combined with dural-based masses are a common MR imaging finding of meningeal intracranial IMT. Adjacent leptomeningeal involvement and dural venous sinus thrombosis are frequently associated. The diffuse type has a tendency toward recurrence." />
<meta name="DC.Contributor" content="J.-H. Kim" />
<meta name="DC.Contributor" content="K.-H. Chang" />
<meta name="DC.Contributor" content="D.G. Na" />
<meta name="DC.Contributor" content="S.-H. Park" />
<meta name="DC.Contributor" content="E. Kim" />
<meta name="DC.Contributor" content="D.H. Han" />
<meta name="DC.Contributor" content="H.-M. Kwon" />
<meta name="DC.Contributor" content="C.-H. Sohn" />
<meta name="DC.Contributor" content="Y.J. Yim" />
<meta name="article:published_time" content="2009-06-01" />
<meta name="article:section" content="BRAIN" />
<meta name="citation_title" content="Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor" />
<meta name="citation_abstract" lang="en" content="&lt;p&gt;&lt;b&gt;BACKGROUND AND PURPOSE:&lt;/b&gt; Meningeal inflammatory myofibroblastic tumor (IMT) has been rarely reported, and its prognosis is still unclear. Our purpose was to describe the imaging features of patients with meningeal IMT and their results on follow-up studies.&lt;/p&gt;&lt;p&gt;&lt;b&gt;MATERIALS AND METHODS:&lt;/b&gt; Twenty-four MR images in 10 consecutive patients with pathologically proved meningeal IMTs were retrospectively evaluated, focusing on the lesion distribution, signal intensity (SI), and contrast-enhancement pattern with a review of the clinical records.&lt;/p&gt;&lt;p&gt;&lt;b&gt;RESULTS:&lt;/b&gt; Eight patients with intracranial IMT showed localized (&lt;i&gt;n&lt;/i&gt; = 4) or diffuse (&lt;i&gt;n&lt;/i&gt; = 4) dural thickening, a single mass (&lt;i&gt;n&lt;/i&gt; = 5) or 2 (&lt;i&gt;n&lt;/i&gt; = 2) dural-based masses with surrounding edema, dural venous sinus thrombosis (&lt;i&gt;n&lt;/i&gt; = 5), and leptomeningeal involvement (&lt;i&gt;n&lt;/i&gt; = 5). Extracranial involvement of the mastoid (&lt;i&gt;n&lt;/i&gt; = 2) and orbit (&lt;i&gt;n&lt;/i&gt; = 2) was also associated. Each of the 2 patients with intraspinal IMT showed a dural-based mass and a segmental dural thickening, respectively. All of the thickened dura showed low SI on T2-weighted images, iso-SI on T1-weighted images, and diffuse contrast enhancement. Variable recurrences with dural-based masses, mastoid involvement, or nasolacrimal duct involvement were observed in all 4 patients with diffuse intracranial IMT, but not in the others.&lt;/p&gt;&lt;p&gt;&lt;b&gt;CONCLUSIONS:&lt;/b&gt; Localized or diffuse dural thickening of T2 low SI and diffuse contrast enhancement combined with dural-based masses are a common MR imaging finding of meningeal intracranial IMT. Adjacent leptomeningeal involvement and dural venous sinus thrombosis are frequently associated. The diffuse type has a tendency toward recurrence.&lt;/p&gt;" />
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<meta name="twitter:title" content="Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:image" content="http://ajnr-stage2.stage.highwire.org/sites/default/files/highwire/ajnr/30/6.cover.gif" />
<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Meningeal inflammatory myofibroblastic tumor (IMT) has been rarely reported, and its prognosis is still unclear. Our purpose was to describe the imaging features of patients with meningeal IMT and their results on follow-up studies.

MATERIALS AND METHODS: Twenty-four MR images in 10 consecutive patients with pathologically proved meningeal IMTs were retrospectively evaluated, focusing on the lesion distribution, signal intensity (SI), and contrast-enhancement pattern with a review of the clinical records.

RESULTS: Eight patients with intracranial IMT showed localized ( n = 4) or diffuse ( n = 4) dural thickening, a single mass ( n = 5) or 2 ( n = 2) dural-based masses with surrounding edema, dural venous sinus thrombosis ( n = 5), and leptomeningeal involvement ( n = 5). Extracranial involvement of the mastoid ( n = 2) and orbit ( n = 2) was also associated. Each of the 2 patients with intraspinal IMT showed a dural-based mass and a segmental dural thickening, respectively. All of the thickened dura showed low SI on T2-weighted images, iso-SI on T1-weighted images, and diffuse contrast enhancement. Variable recurrences with dural-based masses, mastoid involvement, or nasolacrimal duct involvement were observed in all 4 patients with diffuse intracranial IMT, but not in the others.

CONCLUSIONS: Localized or diffuse dural thickening of T2 low SI and diffuse contrast enhancement combined with dural-based masses are a common MR imaging finding of meningeal intracranial IMT. Adjacent leptomeningeal involvement and dural venous sinus thrombosis are frequently associated. The diffuse type has a tendency toward recurrence." />
<meta name="og-title" property="og:title" content="Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor" />
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<meta name="og-site-name" property="og:site_name" content="American Journal of Neuroradiology" />
<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: Meningeal inflammatory myofibroblastic tumor (IMT) has been rarely reported, and its prognosis is still unclear. Our purpose was to describe the imaging features of patients with meningeal IMT and their results on follow-up studies.

MATERIALS AND METHODS: Twenty-four MR images in 10 consecutive patients with pathologically proved meningeal IMTs were retrospectively evaluated, focusing on the lesion distribution, signal intensity (SI), and contrast-enhancement pattern with a review of the clinical records.

RESULTS: Eight patients with intracranial IMT showed localized ( n = 4) or diffuse ( n = 4) dural thickening, a single mass ( n = 5) or 2 ( n = 2) dural-based masses with surrounding edema, dural venous sinus thrombosis ( n = 5), and leptomeningeal involvement ( n = 5). Extracranial involvement of the mastoid ( n = 2) and orbit ( n = 2) was also associated. Each of the 2 patients with intraspinal IMT showed a dural-based mass and a segmental dural thickening, respectively. All of the thickened dura showed low SI on T2-weighted images, iso-SI on T1-weighted images, and diffuse contrast enhancement. Variable recurrences with dural-based masses, mastoid involvement, or nasolacrimal duct involvement were observed in all 4 patients with diffuse intracranial IMT, but not in the others.

CONCLUSIONS: Localized or diffuse dural thickening of T2 low SI and diffuse contrast enhancement combined with dural-based masses are a common MR imaging finding of meningeal intracranial IMT. Adjacent leptomeningeal involvement and dural venous sinus thrombosis are frequently associated. The diffuse type has a tendency toward recurrence." />
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    <div class="highwire-article-citation highwire-citation-type-highwire-article node7975--5" data-node-nid="7975" id="top-node-7975--61047432181" data-pisa="ajnr;30/6/1261" data-pisa-master="ajnr;ajnr.A1526" data-apath="/ajnr/30/6/1261.atom" data-hw-author-tooltip-instance="highwire_author_tooltip"><div class="highwire-cite highwire-cite-highwire-article highwire-citation-jcore-article-title-complete clearfix has-author-tooltip highwire-citation-highwire-article-top-a">
  
  
      <div class="highwire-cite-overline"><span  class="highwire-cite-metadata-article-type highwire-cite-metadata">Research Article</span><span class="separator-pipe"></span><span  class="highwire-cite-metadata-art-cat highwire-cite-metadata"><span class="wrapper">BRAIN</span></span></div>
  
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      <h1 class="highwire-cite-title" id="page-title">Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">J.-H. Kim</span>, <span class="highwire-citation-author" data-delta="1">K.-H. Chang</span>, <span class="highwire-citation-author" data-delta="2">D.G. Na</span>, <span class="highwire-citation-author" data-delta="3">S.-H. Park</span>, <span class="highwire-citation-author" data-delta="4">E. Kim</span>, <span class="highwire-citation-author" data-delta="5">D.H. Han</span>, <span class="highwire-citation-author" data-delta="6">H.-M. Kwon</span>, <span class="highwire-citation-author" data-delta="7">C.-H. Sohn</span> and <span class="highwire-citation-author" data-delta="8">Y.J. Yim</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">June 2009,  </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1261-1267; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A1526 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-7975--61047432181" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">J.-H. Kim </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=J.-H.%2BKim%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=Kim%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%3AJ.-H.%2BKim%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">K.-H. 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Han </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=D.H.%2BHan%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=Han%20D&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%3AD.H.%2BHan%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-6"><div class="author-tooltip-name">H.-M. 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    <div class="highwire-markup"><div xmlns="http://www.w3.org/1999/xhtml" xmlns:xhtml="http://www.w3.org/1999/xhtml" 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-30.6.1261.1"><div class="cit-metadata"><cite>Fletcher CDM, Unni K, Mertens F. <span class="cit-source">Pathology and Genetics, Tumors of Soft Tissue and Bone: World Health Organization Classification of Tumors</span>. 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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 30</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 6 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">June 2009 </div></div>
      
      
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      <div class="highwire-cite-title">Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">J.-H.</span> <span class="nlm-surname">Kim</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">K.-H.</span> <span class="nlm-surname">Chang</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">D.G.</span> <span class="nlm-surname">Na</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">S.-H.</span> <span class="nlm-surname">Park</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">E.</span> <span class="nlm-surname">Kim</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">D.H.</span> <span class="nlm-surname">Han</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">H.-M.</span> <span class="nlm-surname">Kwon</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">C.-H.</span> <span class="nlm-surname">Sohn</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">Y.J.</span> <span class="nlm-surname">Yim</span></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">Jun 2009, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1261-1267; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A1526 </span></div>
  
  
  
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      <div class="highwire-cite-title">Imaging Features of Meningeal Inflammatory Myofibroblastic Tumor</div>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0"><span class="nlm-given-names">J.-H.</span> <span class="nlm-surname">Kim</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">K.-H.</span> <span class="nlm-surname">Chang</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">D.G.</span> <span class="nlm-surname">Na</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">S.-H.</span> <span class="nlm-surname">Park</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">E.</span> <span class="nlm-surname">Kim</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">D.H.</span> <span class="nlm-surname">Han</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">H.-M.</span> <span class="nlm-surname">Kwon</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">C.-H.</span> <span class="nlm-surname">Sohn</span></span>, <span class="highwire-citation-author" data-delta="8"><span class="nlm-given-names">Y.J.</span> <span class="nlm-surname">Yim</span></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">Jun 2009, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">30 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(6) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">1261-1267; </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata"><span class="label">DOI:</span> 10.3174/ajnr.A1526 </span></div>
  
  
  
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