piriform fossa

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pir·i·form fos·sa

[TA]
a recess in the anterolateral wall of the nasopharynx on each side of the vestible of the larynx separated from it by the aryepiglottic folds.

pir·i·form fos·sa

(piri-fōrm fosă) [TA]
Recess in anterolateral wall of nasopharynx on each side of vestibule of the larynx separated from it by aryepiglottic folds.
References in periodicals archive ?
We describe the diagnostic and therapeutic complexities we encountered in an unusual case of piriform sinus cancer that had arisen in a field of pharyngeal Crohn disease.
It then ascends along the carotid sheath, passing over the superior laryngeal nerve, deep to the glossopharyngeal nerve, behind the internal carotid, piercing the thyrohyoid membrane and entering the upper lateral piriform sinus wall (18, 19).
Oral cancers include those of the lip, tongue, mouth, throat and a region called the piriform sinus.
The pseudomembrane covered the supraglottic structures, including the epiglottis, vallecula and piriform sinus, the postericoid region, and glottic inlet.
However, the patient swallowed, and the needle migrated to the piriform sinus and then disappeared in the esophagus.
Folds of Gore-Tex were seen in the right piriform sinus (figure 1).
A barium swallow esophagogram revealed a fistulous tract from the piriform sinus to a right fourth branchial cleft cyst (figure 1, B).
For example, Sato et al reported the successful and immediate recovery of normal swallowing function with the injection of autologous fat into the thyroarytenoid muscle, false vocal fold, aryepiglottic fold, and medial wall of the piriform sinus in 3 patients.
2-cm radiopaque foreign body in the hypopharynx perforating the left piriform sinus, with extensive fascial emphysema in the retropharyngeal and parapharyngeal spaces extending into the mediastinum (figure 1).
Qureshi et al conducted a prospective study of 143 patients who underwent total laryngectomy for squamous cell carcinoma of the larynx and piriform sinus.
A size 3 Miller intubating laryngoscope was placed into the left piriform sinus and used to mobilize the displaced segment obliquely, anteriorly, and to the right.