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<meta name="DC.Title" content="Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases" />
<meta name="DC.Identifier" content="10.3174/ajnr.A2212" />
<meta name="DC.Date" content="2010-09-01" />
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<meta name="DC.Description" content="BACKGROUND AND PURPOSE: SCSCs are rare. This study reviews our experience with CT and MR imaging of SCSCs.

MATERIALS AND METHODS: We retrospectively reviewed the CT and MR imaging studies as well as clinical data of 12 patients (6 men, 6 women; mean age, 41 years; range, 27–55 years) with surgicopathologic evidence of SCSC, referred to our institution between January 1999 to October 2008. Images were evaluated with respect to the location, number, morphology, attenuation/signal intensity, enhancement characteristics, and patterns of mass effect of the schwannomas.

RESULTS: The schwannomas were solitary, well-circumscribed, and medial to the carotid sheath. Seven were hypoattenuated to skeletal muscle on CT with poor postcontrast enhancement, 4 were isoattenuated, and a single lesion showed intense heterogeneous enhancement. At MR imaging, they were heterogeneously bright on T2WI with intense inhomogeneous postgadolinium enhancement. The ICA was displaced anteriorly in 9 patients with a component of lateral displacement in 8 of these patients. The ICA was in a neutral position in 2 patients and posterolaterally displaced in 1 patient. A single patient demonstrated separation of the ICA and IJV. There was splaying of the carotid bifurcation in 4 patients.

CONCLUSIONS: We present the patterns of mass effect and the spectrum of CT and MR imaging characteristics of SCSC, including certain observations that are infrequently described in the published literature.

ECA
:   external carotid artery
ICA
:   internal carotid artery
IJV
:   internal jugular vein
S
:   schwannoma
SCSC
:   schwannoma of the cervical sympathetic chain
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging" />
<meta name="DC.Contributor" content="G. Anil" />
<meta name="DC.Contributor" content="T.Y. Tan" />
<meta name="article:published_time" content="2010-09-01" />
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<meta name="citation_abstract" lang="en" content="&lt;h3&gt;BACKGROUND AND PURPOSE:&lt;/h3&gt;
&lt;p&gt;SCSCs are rare. This study reviews our experience with CT and MR imaging of SCSCs.&lt;/p&gt;&lt;h3&gt;MATERIALS AND METHODS:&lt;/h3&gt;
&lt;p&gt;We retrospectively reviewed the CT and MR imaging studies as well as clinical data of 12 patients (6 men, 6 women; mean age, 41 years; range, 27–55 years) with surgicopathologic evidence of SCSC, referred to our institution between January 1999 to October 2008. Images were evaluated with respect to the location, number, morphology, attenuation/signal intensity, enhancement characteristics, and patterns of mass effect of the schwannomas.&lt;/p&gt;&lt;h3&gt;RESULTS:&lt;/h3&gt;
&lt;p&gt;The schwannomas were solitary, well-circumscribed, and medial to the carotid sheath. Seven were hypoattenuated to skeletal muscle on CT with poor postcontrast enhancement, 4 were isoattenuated, and a single lesion showed intense heterogeneous enhancement. At MR imaging, they were heterogeneously bright on T2WI with intense inhomogeneous postgadolinium enhancement. The ICA was displaced anteriorly in 9 patients with a component of lateral displacement in 8 of these patients. The ICA was in a neutral position in 2 patients and posterolaterally displaced in 1 patient. A single patient demonstrated separation of the ICA and IJV. There was splaying of the carotid bifurcation in 4 patients.&lt;/p&gt;&lt;h3&gt;CONCLUSIONS:&lt;/h3&gt;
&lt;p&gt;We present the patterns of mass effect and the spectrum of CT and MR imaging characteristics of SCSC, including certain observations that are infrequently described in the published literature.&lt;/p&gt;" />
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<meta name="twitter:title" content="Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases" />
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:image" content="http://ajnr-stage2.stage.highwire.org/sites/default/files/highwire/ajnr/31/8.cover.gif" />
<meta name="twitter:description" content="BACKGROUND AND PURPOSE: SCSCs are rare. This study reviews our experience with CT and MR imaging of SCSCs.

MATERIALS AND METHODS: We retrospectively reviewed the CT and MR imaging studies as well as clinical data of 12 patients (6 men, 6 women; mean age, 41 years; range, 27–55 years) with surgicopathologic evidence of SCSC, referred to our institution between January 1999 to October 2008. Images were evaluated with respect to the location, number, morphology, attenuation/signal intensity, enhancement characteristics, and patterns of mass effect of the schwannomas.

RESULTS: The schwannomas were solitary, well-circumscribed, and medial to the carotid sheath. Seven were hypoattenuated to skeletal muscle on CT with poor postcontrast enhancement, 4 were isoattenuated, and a single lesion showed intense heterogeneous enhancement. At MR imaging, they were heterogeneously bright on T2WI with intense inhomogeneous postgadolinium enhancement. The ICA was displaced anteriorly in 9 patients with a component of lateral displacement in 8 of these patients. The ICA was in a neutral position in 2 patients and posterolaterally displaced in 1 patient. A single patient demonstrated separation of the ICA and IJV. There was splaying of the carotid bifurcation in 4 patients.

CONCLUSIONS: We present the patterns of mass effect and the spectrum of CT and MR imaging characteristics of SCSC, including certain observations that are infrequently described in the published literature.

ECA
:   external carotid artery
ICA
:   internal carotid artery
IJV
:   internal jugular vein
S
:   schwannoma
SCSC
:   schwannoma of the cervical sympathetic chain
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging" />
<meta name="og-title" property="og:title" content="Imaging Characteristics of Schwannoma of the Cervical Sympathetic Chain: A Review of 12 Cases" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/31/8/1408" />
<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: SCSCs are rare. This study reviews our experience with CT and MR imaging of SCSCs.

MATERIALS AND METHODS: We retrospectively reviewed the CT and MR imaging studies as well as clinical data of 12 patients (6 men, 6 women; mean age, 41 years; range, 27–55 years) with surgicopathologic evidence of SCSC, referred to our institution between January 1999 to October 2008. Images were evaluated with respect to the location, number, morphology, attenuation/signal intensity, enhancement characteristics, and patterns of mass effect of the schwannomas.

RESULTS: The schwannomas were solitary, well-circumscribed, and medial to the carotid sheath. Seven were hypoattenuated to skeletal muscle on CT with poor postcontrast enhancement, 4 were isoattenuated, and a single lesion showed intense heterogeneous enhancement. At MR imaging, they were heterogeneously bright on T2WI with intense inhomogeneous postgadolinium enhancement. The ICA was displaced anteriorly in 9 patients with a component of lateral displacement in 8 of these patients. The ICA was in a neutral position in 2 patients and posterolaterally displaced in 1 patient. A single patient demonstrated separation of the ICA and IJV. There was splaying of the carotid bifurcation in 4 patients.

CONCLUSIONS: We present the patterns of mass effect and the spectrum of CT and MR imaging characteristics of SCSC, including certain observations that are infrequently described in the published literature.

ECA
:   external carotid artery
ICA
:   internal carotid artery
IJV
:   internal jugular vein
S
:   schwannoma
SCSC
:   schwannoma of the cervical sympathetic chain
T1WI
:   T1-weighted imaging
T2WI
:   T2-weighted imaging" />
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<p id="p-1"><strong>BACKGROUND AND PURPOSE:</strong> SCSCs are rare. This study reviews our experience with CT and MR imaging of SCSCs.</p>
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<p id="p-2"><strong>MATERIALS AND METHODS:</strong> We retrospectively reviewed the CT and MR imaging studies as well as clinical data of 12 patients (6 men, 6 women; mean age, 41 years; range, 27–55 years) with surgicopathologic evidence of SCSC, referred to our institution between January 1999 to October 2008. Images were evaluated with respect to the location, number, morphology, attenuation/signal intensity, enhancement characteristics, and patterns of mass effect of the schwannomas.</p>
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<p id="p-3"><strong>RESULTS:</strong> The schwannomas were solitary, well-circumscribed, and medial to the carotid sheath. Seven were hypoattenuated to skeletal muscle on CT with poor postcontrast enhancement, 4 were isoattenuated, and a single lesion showed intense heterogeneous enhancement. At MR imaging, they were heterogeneously bright on T2WI with intense inhomogeneous postgadolinium enhancement. The ICA was displaced anteriorly in 9 patients with a component of lateral displacement in 8 of these patients. The ICA was in a neutral position in 2 patients and posterolaterally displaced in 1 patient. A single patient demonstrated separation of the ICA and IJV. There was splaying of the carotid bifurcation in 4 patients.</p>
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<p id="p-4"><strong>CONCLUSIONS:</strong> We present the patterns of mass effect and the spectrum of CT and MR imaging characteristics of SCSC, including certain observations that are infrequently described in the published literature.</p>
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</div><div class="section glossary" id="glossary-1"><h2>Abbreviations</h2><dl id="def-list-1"><dt id="def-item-1">ECA<span class="def-item-dt-sep"></span></dt><dd>external carotid artery<span class="def-item-dd-sep"></span></dd><dt id="def-item-2">ICA<span class="def-item-dt-sep"></span></dt><dd>internal carotid artery<span class="def-item-dd-sep"></span></dd><dt id="def-item-3">IJV<span class="def-item-dt-sep"></span></dt><dd>internal jugular vein<span class="def-item-dd-sep"></span></dd><dt id="def-item-4">S<span class="def-item-dt-sep"></span></dt><dd>schwannoma<span class="def-item-dd-sep"></span></dd><dt id="def-item-5">SCSC<span class="def-item-dt-sep"></span></dt><dd>schwannoma of the cervical sympathetic chain<span class="def-item-dd-sep"></span></dd><dt id="def-item-6">T1WI<span class="def-item-dt-sep"></span></dt><dd>T1-weighted imaging<span class="def-item-dd-sep"></span></dd><dt id="def-item-7">T2WI<span class="def-item-dt-sep"></span></dt><dd>T2-weighted imaging</dd></dl></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><a href="http://ajnr-stage2.stage.highwire.org/content/31/8/1408.full" class="hw-link hw-link-article-full-text" data-icon-position="" data-hide-link-title="0">View Full Text</a></div>  </div>

  
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