atresia of posterior naris[耳鼻喉] 后鼻孔闭锁
posterior naris retractor后鼻孔牵开器
atresia posterior naris释义后鼻孔闭锁
primary posterior naris原始后鼻孔;释义原始后鼻孔
polyp of posterior naris后鼻孔息肉
primitive posterior naris原始后鼻孔
polyp posterior naris后鼻孔息肉
PCNA enyession is high in most cases of posterior naris and nasalcavop involved, which is correlative with the strong Proliferative achvityof tUmor and the small resistance of nasal cavity.
2、NPC累及后鼻孔鼻腔，PCNA多为高表达，与肿瘤的增殖 活性较强、后鼻孔鼻腔阻力较小，致肿瘤易向前发展有关。
参考来源 - 鼻咽癌周围深层蔓延CT影像及其与PCNA表达的相关性研究