Colliscalene triangle
Disclosures
- updated 30 Aug 2022:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
Updates to Article Attributes
Body
was changed:
The colliscalene triangle is an important anatomical region of the neck, situated medial to the scalenus anterior muscle.
It should not be confused with the scalene triangle which is located posterior to the scalenus anterior muscle.
Gross anatomy
Boundaries
medial: lateral border of longus colli
lateral: medial border of scalenus anterior
inferior: first part of the subclavian artery
apex: carotid tubercle (Chassaignac tubercle)
roof: deep investing layer of cervical fascia
Contents
-
arterial
inferior thyroid artery: arching over apex of triangle
first part of vertebral artery
-
venous
-
nervous
-
lymphatic
thoracic duct (on left)
right lymphatic duct (on right)
Variant anatomy
additional vertebral vein passing through foramen transversarium of C7
vertebral artery entering at C7
-<li>medial: lateral border of <a href="/articles/longus-colli">longus colli</a>-</li>-<li>lateral: medial border of scalenus anterior</li>-<li>inferior: first part of the <a href="/articles/subclavian-artery">subclavian artery</a>-</li>-<li>apex: <a href="/articles/carotid-tubercle">carotid tubercle</a> (Chassaignac tubercle)</li>-<li>roof: deep investing layer of cervical fascia</li>- +<li><p>medial: lateral border of <a href="/articles/longus-colli-muscle">longus colli</a></p></li>
- +<li><p>lateral: medial border of scalenus anterior</p></li>
- +<li><p>inferior: first part of the <a href="/articles/subclavian-artery">subclavian artery</a></p></li>
- +<li><p>apex: <a href="/articles/carotid-tubercle">carotid tubercle</a> (Chassaignac tubercle)</p></li>
- +<li><p>roof: deep investing layer of cervical fascia</p></li>
-<li>arterial<ul>-<li><a href="/articles/thyrocervical-trunk">thyrocervical trunk</a></li>-<a href="/articles/inferior-thyroid-artery-1">inferior thyroid artery</a>: arching over apex of triangle</li>-<li>first part of <a href="/articles/vertebral-artery">vertebral artery</a>-</li>- +<p>arterial</p>
- +<ul>
- +<li><p><a href="/articles/thyrocervical-trunk">thyrocervical trunk</a></p></li>
- +<li><p><a href="/articles/inferior-thyroid-artery-1">inferior thyroid artery</a>: arching over apex of triangle</p></li>
- +<li><p>first part of <a href="/articles/vertebral-artery">vertebral artery</a></p></li>
-<li>venous<ul><li><a title="Basivertebral veins" href="/articles/vertebral-venous-plexus-1">vertebral vein</a></li></ul>- +<li>
- +<p>venous</p>
- +<ul><li><p><a href="/articles/vertebral-venous-plexus-1" title="Basivertebral veins">vertebral vein</a></p></li></ul>
-<li>nervous<ul>-<li><a title="Stellate ganglion" href="/articles/stellate-ganglion">inferior cervical (stellate) ganglion</a></li>-<li><a title="middle cervical ganglion" href="/articles/middle-cervical-ganglion">middle cervical ganglion</a></li>-<li><a href="/articles/ansa-subclavia">ansa subclavia</a></li>- +<li>
- +<p>nervous</p>
- +<ul>
- +<li><p><a href="/articles/inferior-cervical-ganglion" title="Inferior cervical ganglion">inferior cervical ganglion</a> or <a href="/articles/stellate-ganglion" title="Stellate ganglion">stellate ganglion</a></p></li>
- +<li><p><a href="/articles/middle-cervical-ganglion" title="middle cervical ganglion">middle cervical ganglion</a></p></li>
- +<li><p><a href="/articles/ansa-subclavia">ansa subclavia</a></p></li>
-<li>lymphatic<ul>-<li>-<a href="/articles/thoracic-duct">thoracic duct</a> (on left)</li>-<a href="/articles/right-lymphatic-duct">right lymphatic duct</a> (on right)</li>- +<p>lymphatic</p>
- +<ul>
- +<li><p><a href="/articles/thoracic-duct">thoracic duct</a> (on left)</p></li>
- +<li><p><a href="/articles/right-lymphatic-duct">right lymphatic duct</a> (on right)</p></li>
-<li>additional vertebral vein passing through <a title="foramen transversarium" href="/articles/foramen-transversarium">foramen transversarium</a> of C7</li>-<li>vertebral artery entering at C7</li>- +<li><p>additional vertebral vein passing through <a href="/articles/foramen-transversarium" title="foramen transversarium">foramen transversarium</a> of C7</p></li>
- +<li><p>vertebral artery entering at C7</p></li>
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