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choana

   Also found in: Wikipedia 0.09 sec.
choana /cho·a·na/ (ko´ah-nah) pl. cho´anae   [L.]
1. infundibulum.
2. [pl.] the paired openings between the nasal cavity and the nasopharynx.
cho·a·na (k-n)
n. pl. cho·a·nae (-n)
The opening into the nasopharynx of the nasal cavity on either side; posterior naris.
choana
pl. choanae [L.]
1. any funnel-shaped cavity or infundibulum.
2. choanae, the paired openings between the nasal cavity and the nasopharynx.
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Choanal polyps are benign masses that protrude through the choana into the nasopharynx.
Sphenochoanal polyp presenting with concomitant nasal polyps by Saleh, Hesham A. / Ear, Nose and Throat Journal
However, nasal endoscopy revealed that a large polypoid mass had filled the fight superior nasal cavity and extended into the posterior choana (figure 1).
Sphenochoanal polyp: an endoscopic view by Varshney, Saurabh / Ear, Nose and Throat Journal
The route of entry is usually anterior, although some foreign bodies have been reported to have entered through the choana during vomiting or coughing.
Report of an unusual cause of rhinolithiasis: an 'opioma' by Daneshi, Ahmad / Ear, Nose and Throat Journal
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