Cavum vergae

Changed by Rahul Setia, 4 Feb 2018

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The cavum vergae (CV), along with the cavum septum pellucidum (CSP) is a persistence of the embryological fluid-filled space between the leaflets of the septum pellucidum and is a common anatomical variant. The CV is sometimes referred to as the 6th ventricle ³.

Gross anatomy

The CV is the posterior extension of the CSP, posterior to the anterior columns of the fornix, lying ~~inferior~~anterior to the splenium of the corpus callosum, but it may exist independently ^1-3.

Relations ³

anteriorly: cavum septum pellucidum
posteriorly: splenium of the corpus callosum
superiorly: body of the corpus callosum
inferiorly: transverse fornix

Embryology

The CV and CSP usually close in the 6th week in utero but may persist in 30% of term infants and 15% of adults ³. During development, these spaces obliterate postero-anteriorly: the CV followed by the CSP. Because of this ordered obliteration, a CSP almost always accompanies a CV may not always occur in the same sequence ^1-2.

Differential diagnosis

Related pathology

cavum vergae cyst

-<p>The <strong>cavum vergae</strong> (CV), along with the <a href="/articles/cavum-septum-pellucidum-3">cavum septum pellucidum</a> (CSP) is a persistence of the embryological fluid-filled space between the leaflets of the <a href="/articles/septum-pellucidum">septum pellucidum</a> and is a common anatomical variant. The CV is sometimes referred to as the <strong>6th ventricle</strong> <sup>3</sup>. </p><h4>Gross anatomy</h4><p>The CV is the posterior extension of the CSP, posterior to the anterior columns of the <a href="/articles/fornix">fornix</a>, lying inferior to the splenium of the <a href="/articles/corpus-callosum">corpus callosum</a>, but it may exist independently <sup>1-3</sup>. </p><h5>Relations <sup>3</sup>
+<p>The <strong>cavum vergae</strong> (CV), along with the <a href="/articles/cavum-septum-pellucidum-3">cavum septum pellucidum</a> (CSP) is a persistence of the embryological fluid-filled space between the leaflets of the <a href="/articles/septum-pellucidum">septum pellucidum</a> and is a common anatomical variant. The CV is sometimes referred to as the <strong>6th ventricle</strong> <sup>3</sup>. </p><h4>Gross anatomy</h4><p>The CV is the posterior extension of the CSP, posterior to the anterior columns of the <a href="/articles/fornix-brain">fornix</a>, lying anterior to the splenium of the <a href="/articles/corpus-callosum">corpus callosum</a>, but it may exist independently <sup>1-3</sup>. </p><h5>Relations <sup>3</sup>
~~-<li>anteriorly: <a href="/articles/fornix">fornix</a>~~
+<li>anteriorly: <a title="Cavum septum pellucidum" href="/articles/cavum-septum-pellucidum-3">cavum septum pellucidum</a>

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