It often grows through the nasal choana into the nasopharynx.
常常可以通过后鼻孔累及鼻咽部。
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。
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 .