Pre-epiglottic space
Updates to Article Attributes
Body
was changed:
The pre-epiglottic space (PES) is a triangular fat-containing space between the epiglottis and hyoid bone.
Gross anatomy
Boundaries
- superior: hyoepiglottic ligament
- anterior: thyrohyoid membrane, thyroid cartilage
- inferior: thyroepiglottic ligament
- posterior: epiglottis, quadrangular membrane
Radiographic features
MRI
- preferred imaging modality for assessment of PES invasion (best evaluated on pre-contrast T1, where fat appears bright)
- fat-rich T1 hyperintense region
Clinical importance
This area is rich in lymphatics which drain from the supraglottic larynx to cervical nodes. As such, the PES is at high risk of involvement of oropharyngeal and supraglottic laryngeal carcinomas. Additionally, it is important in staging as invasion of the PES automatically raises the TNM staging to T3 in oropharyngeal and supraglottic laryngeal carcinomas. PES involvement necessitates more aggressive surgical treatments with higher morbidity such as supraglottic or total laryngectomy, in contrast to more conservative treatment such as local resection or radiation therapy which may be considered when the PES is not involved.
Gross anatomy
Boundaries
superior: hyoepiglottic ligamentanterior: thyrohyoid membrane, thyroid cartilageinferior: thyroepiglottic ligament-
posterior:epiglottis, quadrangular membrane
Radiographic features
MRI
preferred imaging modality for assessment of PES invasion (best evaluated on pre-contrast T1, where fat appears bright)fat-rich T1 hyperintense region
Related pathology
-<p>The <strong>pre-epiglottic space (PES) </strong>is a triangular fat-containing space between the <a href="/articles/epiglottis">epiglottis</a> and <a href="/articles/hyoid-bone">hyoid bone</a>.</p><p>This area is rich in lymphatics which drain from the supraglottic larynx to cervical nodes. As such, the PES is at high risk of involvement of oropharyngeal and <a href="/articles/squamous-cell-carcinoma-of-the-larynx">supraglottic laryngeal carcinomas</a>. Additionally, it is important in staging as invasion of the PES automatically raises the TNM staging to T3 in <a href="/articles/oropharyngeal-p16-negative-cancer-staging">oropharyngeal</a> and <a href="/articles/laryngeal-carcinoma-staging">supraglottic laryngeal carcinomas</a>. PES involvement necessitates more aggressive surgical treatments with higher morbidity such as supraglottic or total laryngectomy, in contrast to more conservative treatment such as local resection or radiation therapy which may be considered when the PES is not involved.</p><h4>Gross anatomy</h4><h5>Boundaries</h5><ul>- +<p>The <strong>pre-epiglottic space (PES) </strong>is a triangular fat-containing space between the <a href="/articles/epiglottis">epiglottis</a> and <a href="/articles/hyoid-bone">hyoid bone</a>.</p><h4>Gross anatomy</h4><h5>Boundaries</h5><ul>
-</ul><h4>Related pathology</h4><ul>- +</ul><h4>Clinical importance</h4><p>This area is rich in lymphatics which drain from the supraglottic larynx to cervical nodes. As such, the PES is at high risk of involvement of oropharyngeal and <a href="/articles/squamous-cell-carcinoma-of-the-larynx">supraglottic laryngeal carcinomas</a>. Additionally, it is important in staging as invasion of the PES automatically raises the TNM staging to T3 in <a href="/articles/oropharyngeal-p16-negative-cancer-staging">oropharyngeal</a> and <a href="/articles/laryngeal-carcinoma-staging">supraglottic laryngeal carcinomas</a>. PES involvement necessitates more aggressive surgical treatments with higher morbidity such as supraglottic or total laryngectomy, in contrast to more conservative treatment such as local resection or radiation therapy which may be considered when the PES is not involved.</p><h4>Related pathology</h4><ul>
-<li><a href="/articles/laryngeal-squamous-cell-carcinoma-staging-1">laryngeal squamous cell carcinoma (staging)</a></li>- +<li><a href="/articles/laryngeal-carcinoma-staging">laryngeal squamous cell carcinoma (staging)</a></li>
Images Changes:
Image 1 CT (C+ arterial phase) ( update )
Caption
was changed:
Case 1: Thyroglossalthyroglossal duct cyst with PES extension
Image 2 CT (C+ delayed) ( update )
Caption
was changed:
Case 2: Thyroglossalthyroglossal duct cyst with PES extension
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