Piriform recess
Recessus piriformis
- Synonym: Piriform fossa; Piriform sinus
- Related terms: Piriform fossa; Piriform recess
Definition
On either side of the laryngeal orifice is a recess, termed the sinus piriformis, which is bounded medially by the aryepiglottic fold, laterally by the thyroid cartilage and hyothyroid membrane.