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<meta name="DC.Title" content="Spinal MR Findings in Continuous Epidural Analgesia without Infection" />
<meta name="DC.Date" content="2005-05-01" />
<meta name="DC.Publisher" content="American Journal of Neuroradiology" />
<meta name="DC.Rights" content="Copyright © American Society of Neuroradiology" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: Spinal epidural abscesses are major complications of epidural anesthesia, and their MR features have been reported. In patients receiving continuous infusion via an epidural catheter, MR findings may mimic those of spinal epidural abscess in the absence of infection. The purpose of this study was to assess the spinal MR findings associated with continuous epidural anesthesia.

METHODS: Spinal MR findings in five consecutive patients receiving continuous epidural anesthesia were retrospectively evaluated. Axial and sagittal T1- and T2-weighted spin-echo and contrast-enhanced fat-suppressed T1-weighted spin-echo images were obtained. Infection was ruled out on microbiologic analysis three patients and on follow-up in two. Each lesion was evaluated for its MR signal intensity, location, extent, delineation, and enhancement pattern. In three patients, follow-up MR imaging was performed within 5–150 days, and the images were compared.

RESULTS: Posterior epidural lesions were identified in all five patients. The lesions were isointense to hypointense relative to the spinal cord on T1-weighted images, isointense relative to CSF on T2-weighted images, and well enhanced on enhanced T1-weighted images. The anomalous enhancement involved two to seven vertebral bodies. In one patient, the enhanced lesion slightly compressed the spinal cord. On follow-up MR imaging, the epidural lesions decreased in two patients and did not change in one.

CONCLUSION: Continuous epidural anesthesia can result in MR findings similar to those of epidural abscess, even in the absence of infection." />
<meta name="DC.Contributor" content="Ichiro Ikushima" />
<meta name="DC.Contributor" content="Toshinori Hirai" />
<meta name="DC.Contributor" content="Yukunori Korogi" />
<meta name="DC.Contributor" content="Maeda Norio" />
<meta name="DC.Contributor" content="Mikako Koganemaru" />
<meta name="DC.Contributor" content="Ryoko Suga" />
<meta name="DC.Contributor" content="Shoji Morishita" />
<meta name="DC.Contributor" content="Yasuyuki Yamashita" />
<meta name="article:published_time" content="2005-05-01" />
<meta name="article:section" content="SPINE" />
<meta name="citation_title" content="Spinal MR Findings in Continuous Epidural Analgesia without Infection" />
<meta name="citation_abstract" lang="en" content="&lt;p&gt;&lt;i&gt;BACKGROUND AND PURPOSE:&lt;/i&gt; Spinal epidural abscesses are major complications of epidural anesthesia, and their MR features have been reported. In patients receiving continuous infusion via an epidural catheter, MR findings may mimic those of spinal epidural abscess in the absence of infection. The purpose of this study was to assess the spinal MR findings associated with continuous epidural anesthesia.&lt;/p&gt;&lt;p&gt;&lt;i&gt;METHODS:&lt;/i&gt; Spinal MR findings in five consecutive patients receiving continuous epidural anesthesia were retrospectively evaluated. Axial and sagittal T1- and T2-weighted spin-echo and contrast-enhanced fat-suppressed T1-weighted spin-echo images were obtained. Infection was ruled out on microbiologic analysis three patients and on follow-up in two. Each lesion was evaluated for its MR signal intensity, location, extent, delineation, and enhancement pattern. In three patients, follow-up MR imaging was performed within 5–150 days, and the images were compared.&lt;/p&gt;&lt;p&gt;&lt;i&gt;RESULTS:&lt;/i&gt; Posterior epidural lesions were identified in all five patients. The lesions were isointense to hypointense relative to the spinal cord on T1-weighted images, isointense relative to CSF on T2-weighted images, and well enhanced on enhanced T1-weighted images. The anomalous enhancement involved two to seven vertebral bodies. In one patient, the enhanced lesion slightly compressed the spinal cord. On follow-up MR imaging, the epidural lesions decreased in two patients and did not change in one.&lt;/p&gt;&lt;p&gt;&lt;i&gt;CONCLUSION:&lt;/i&gt; Continuous epidural anesthesia can result in MR findings similar to those of epidural abscess, even in the absence of infection.&lt;/p&gt;" />
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<meta name="citation_publication_date" content="2005/05/01" />
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<meta name="citation_reference" content="citation_title=American Journal of Neuroradiology;citation_journal_abbrev=Am. J. Neuroradiol.;citation_title=Diffusion-Weighted Imaging in a Patient with Vertebral and Epidural Abscesses;citation_pages=496-498;citation_volume=23;citation_year=2002;citation_issue=3;citation_issn=0195-6108;citation_pmid=11901028" />
<meta name="twitter:title" content="Spinal MR Findings in Continuous Epidural Analgesia without Infection" />
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<meta name="twitter:description" content="BACKGROUND AND PURPOSE: Spinal epidural abscesses are major complications of epidural anesthesia, and their MR features have been reported. In patients receiving continuous infusion via an epidural catheter, MR findings may mimic those of spinal epidural abscess in the absence of infection. The purpose of this study was to assess the spinal MR findings associated with continuous epidural anesthesia.

METHODS: Spinal MR findings in five consecutive patients receiving continuous epidural anesthesia were retrospectively evaluated. Axial and sagittal T1- and T2-weighted spin-echo and contrast-enhanced fat-suppressed T1-weighted spin-echo images were obtained. Infection was ruled out on microbiologic analysis three patients and on follow-up in two. Each lesion was evaluated for its MR signal intensity, location, extent, delineation, and enhancement pattern. In three patients, follow-up MR imaging was performed within 5–150 days, and the images were compared.

RESULTS: Posterior epidural lesions were identified in all five patients. The lesions were isointense to hypointense relative to the spinal cord on T1-weighted images, isointense relative to CSF on T2-weighted images, and well enhanced on enhanced T1-weighted images. The anomalous enhancement involved two to seven vertebral bodies. In one patient, the enhanced lesion slightly compressed the spinal cord. On follow-up MR imaging, the epidural lesions decreased in two patients and did not change in one.

CONCLUSION: Continuous epidural anesthesia can result in MR findings similar to those of epidural abscess, even in the absence of infection." />
<meta name="og-title" property="og:title" content="Spinal MR Findings in Continuous Epidural Analgesia without Infection" />
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<meta name="og-description" property="og:description" content="BACKGROUND AND PURPOSE: Spinal epidural abscesses are major complications of epidural anesthesia, and their MR features have been reported. In patients receiving continuous infusion via an epidural catheter, MR findings may mimic those of spinal epidural abscess in the absence of infection. The purpose of this study was to assess the spinal MR findings associated with continuous epidural anesthesia.

METHODS: Spinal MR findings in five consecutive patients receiving continuous epidural anesthesia were retrospectively evaluated. Axial and sagittal T1- and T2-weighted spin-echo and contrast-enhanced fat-suppressed T1-weighted spin-echo images were obtained. Infection was ruled out on microbiologic analysis three patients and on follow-up in two. Each lesion was evaluated for its MR signal intensity, location, extent, delineation, and enhancement pattern. In three patients, follow-up MR imaging was performed within 5–150 days, and the images were compared.

RESULTS: Posterior epidural lesions were identified in all five patients. The lesions were isointense to hypointense relative to the spinal cord on T1-weighted images, isointense relative to CSF on T2-weighted images, and well enhanced on enhanced T1-weighted images. The anomalous enhancement involved two to seven vertebral bodies. In one patient, the enhanced lesion slightly compressed the spinal cord. On follow-up MR imaging, the epidural lesions decreased in two patients and did not change in one.

CONCLUSION: Continuous epidural anesthesia can result in MR findings similar to those of epidural abscess, even in the absence of infection." />
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        	<div class="highwire-cite-metadata"><span  class="highwire-cite-metadata-volume highwire-cite-metadata">Vol. 26</span>, <span  class="highwire-cite-metadata-issue highwire-cite-metadata">Issue 5 </span><div  class="highwire-cite-metadata-pubdate highwire-cite-metadata">1 May 2005 </div></div>
      
      
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      <div class="highwire-cite-title">Spinal MR Findings in Continuous Epidural Analgesia without Infection</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">Ichiro</span> <span class="nlm-surname">Ikushima</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">Toshinori</span> <span class="nlm-surname">Hirai</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">Yukunori</span> <span class="nlm-surname">Korogi</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">Maeda</span> <span class="nlm-surname">Norio</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">Mikako</span> <span class="nlm-surname">Koganemaru</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">Ryoko</span> <span class="nlm-surname">Suga</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">Shoji</span> <span class="nlm-surname">Morishita</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">Yasuyuki</span> <span class="nlm-surname">Yamashita</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">May 2005, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">26 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(5) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">991-995; </span></div>
  
  
  
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      <div class="highwire-cite-title">Spinal MR Findings in Continuous Epidural Analgesia without Infection</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">Ichiro</span> <span class="nlm-surname">Ikushima</span></span>, <span class="highwire-citation-author" data-delta="1"><span class="nlm-given-names">Toshinori</span> <span class="nlm-surname">Hirai</span></span>, <span class="highwire-citation-author" data-delta="2"><span class="nlm-given-names">Yukunori</span> <span class="nlm-surname">Korogi</span></span>, <span class="highwire-citation-author" data-delta="3"><span class="nlm-given-names">Maeda</span> <span class="nlm-surname">Norio</span></span>, <span class="highwire-citation-author" data-delta="4"><span class="nlm-given-names">Mikako</span> <span class="nlm-surname">Koganemaru</span></span>, <span class="highwire-citation-author" data-delta="5"><span class="nlm-given-names">Ryoko</span> <span class="nlm-surname">Suga</span></span>, <span class="highwire-citation-author" data-delta="6"><span class="nlm-given-names">Shoji</span> <span class="nlm-surname">Morishita</span></span>, <span class="highwire-citation-author" data-delta="7"><span class="nlm-given-names">Yasuyuki</span> <span class="nlm-surname">Yamashita</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">May 2005, </span><span  class="highwire-cite-metadata-volume highwire-cite-metadata">26 </span><span  class="highwire-cite-metadata-issue highwire-cite-metadata">(5) </span><span  class="highwire-cite-metadata-pages highwire-cite-metadata">991-995; </span></div>
  
  
  
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