1. It often grows through the nasal choana into the nasopharynx.
常常可以通过后鼻孔累及鼻咽部。
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2. Antralchoanal polyps present as mucoid masses originating at the maxillary antrum extending through a sinus ostium to the choana.
上颌窦后鼻孔息肉表现为起源于上颌窦的粘液样肿块，并通过上颌窦口延伸至后鼻孔。
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3. The inspection could not be finished because of stricture of unilateral choana and nasopharynx caused by deflection of nasal septum in cases, and bilateral rhinostenosis in .
例因鼻中隔偏曲导致一侧后鼻孔和鼻咽部无法检查，例因双侧鼻腔狭窄无法检查，其余9例均可检查。
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4. The inspection could not be finished because of stricture of unilateral choana and nasopharynx caused by deflection of nasal septum in cases, and bilateral rhinostenosis in .
