Citation, DOI, disclosures and article data
At the time the article was created Francis Deng had no recorded disclosures.View Francis Deng's current disclosures
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The pyriform sinus (also spelled piriform sinus and also known as the pyriform recess, pyriform fossa, and smuggler's fossa) is the pear-shaped subsite of the hypopharynx located posterolaterally to either side of the laryngeal opening.
Relations and/or boundaries
The structure is a depression bounded
- medially by the aryepiglottic fold and arytenoid and cricoid cartilages
- laterally by the thyroid cartilage and thyrohyoid membrane
- superiorly by the level of the hyoid bone
- inferiorly by the level of the inferior border of the cricoid cartilage
History and etymology
The term is derived from the Latin term 'pirum' meaning a 'pear' and '-form', meaning having the form of a pear.