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<meta name="DC.Description" content="SUMMARY: Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings associated with this vascular anomaly and its most common pathognomonic imaging signs. The variable morphologic configurations and their corresponding embryologic underpinnings are described. Clinical and surgical implications of this rare anomaly are discussed.

PSA
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MMA
:   middle meningeal artery
CCA
:   common carotid artery
CTC
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ITC
:   inferior tympanic canaliculus
CHL
:   conductive hearing loss
ECA
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ICA
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CTA
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ITA
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FNC
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&lt;p&gt;Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings associated with this vascular anomaly and its most common pathognomonic imaging signs. The variable morphologic configurations and their corresponding embryologic underpinnings are described. Clinical and surgical implications of this rare anomaly are discussed.&lt;/p&gt;" />
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<meta name="twitter:title" content="The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations" />
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<meta name="twitter:description" content="SUMMARY: Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings associated with this vascular anomaly and its most common pathognomonic imaging signs. The variable morphologic configurations and their corresponding embryologic underpinnings are described. Clinical and surgical implications of this rare anomaly are discussed.

PSA
:   persistent stapedial artery
MMA
:   middle meningeal artery
CCA
:   common carotid artery
CTC
:   caroticotympanic canaliculus
ITC
:   inferior tympanic canaliculus
CHL
:   conductive hearing loss
ECA
:   external carotid artery
ICA
:   internal carotid artery
CTA
:   caroticotympanic artery
ITA
:   inferior tympanic artery
FNC
:   facial nerve canal" />
<meta name="og-title" property="og:title" content="The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations" />
<meta name="og-url" property="og:url" content="http://ajnr-stage2.stage.highwire.org/content/early/2020/11/05/ajnr.A6851" />
<meta name="og-site-name" property="og:site_name" content="American Journal of Neuroradiology" />
<meta name="og-description" property="og:description" content="SUMMARY: Persistent stapedial artery is a vascular anomaly with both clinical and surgical implications. Because of its scarcity, however, it remains underrecognized on imaging. Presented here is a series of 10 cases, demonstrating characteristic CT findings associated with this vascular anomaly and its most common pathognomonic imaging signs. The variable morphologic configurations and their corresponding embryologic underpinnings are described. Clinical and surgical implications of this rare anomaly are discussed.

PSA
:   persistent stapedial artery
MMA
:   middle meningeal artery
CCA
:   common carotid artery
CTC
:   caroticotympanic canaliculus
ITC
:   inferior tympanic canaliculus
CHL
:   conductive hearing loss
ECA
:   external carotid artery
ICA
:   internal carotid artery
CTA
:   caroticotympanic artery
ITA
:   inferior tympanic artery
FNC
:   facial nerve canal" />
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      <h1 class="highwire-cite-title" id="page-title">The Many Faces of Persistent Stapedial Artery: CT Findings and Embryologic Explanations</h1>  
    	<div class="highwire-cite-authors"><span  class="highwire-citation-authors"><span class="highwire-citation-author first" data-delta="0">Z.J. LoVerde</span>, <span class="highwire-citation-author" data-delta="1">D.P. Shlapak</span>, <span class="highwire-citation-author" data-delta="2">J.C. Benson</span>, <span class="highwire-citation-author" data-delta="3">M.L. Carlson</span> and <span class="highwire-citation-author" data-delta="4">J.I. Lane</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">November 2020,  </span><span  class="highwire-cite-metadata-doi highwire-cite-metadata">DOI: https://doi.org/10.3174/ajnr.A6851 </span></div>
  
  
  
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<div id="hw-article-author-popups-top-node-85373--61474037473" style="display: none;"><div class="author-tooltip-0"><div class="author-tooltip-name">Z.J. LoVerde </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)</div></span></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=Z.J.%2BLoVerde%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=LoVerde%20Z&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"><a href="/search/author1%3AZ.J.%2BLoVerde%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="https://orcid.org/0000-0002-2116-4456" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for Z.J. LoVerde</a></li></ul></div><div class="author-tooltip-1"><div class="author-tooltip-name">D.P. Shlapak </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)</div></span></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.P.%2BShlapak%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=Shlapak%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"><a href="/search/author1%3AD.P.%2BShlapak%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="https://orcid.org/0000-0002-8704-4115" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for D.P. Shlapak</a></li></ul></div><div class="author-tooltip-2"><div class="author-tooltip-name">J.C. Benson </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)</div></span></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.C.%2BBenson%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=Benson%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"><a href="/search/author1%3AJ.C.%2BBenson%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="https://orcid.org/0000-0002-4038-5422" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J.C. 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Carlson </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=M.L.%2BCarlson%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=Carlson%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"><a href="/search/author1%3AM.L.%2BCarlson%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="https://orcid.org/0000-0002-4925-8593" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for M.L. Carlson</a></li></ul></div><div class="author-tooltip-4"><div class="author-tooltip-name">J.I. Lane </div><div class="author-tooltip-affiliation"><span class="author-tooltip-text"><div class='author-affiliation'><span class='nlm-sup'>a</span>From the Department of Radiology (Z.J.L., D.P.S., J.C.B., J.I.L.)</div></span></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.I.%2BLane%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=Lane%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"><a href="/search/author1%3AJ.I.%2BLane%2B" rel="nofollow" class="" data-icon-position="" data-hide-link-title="0">Search for this author on this site</a></li><li class="author-orcid-link last"><a href="https://orcid.org/0000-0001-5874-633X" target="_blank" class="" data-icon-position="" data-hide-link-title="0">ORCID record for J.I. 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