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Killian息肉也称上颌窦后鼻孔息肉。Killian于1906年首先报告了上颌窦后鼻孔息肉与上颌窦内之间的关系、息肉起源于上颌窦内的病变粘膜。好发于青少年，临床上并不多见，据报告约占鼻息肉的3％～6％[1]。此息肉易与鼻咽部新生物相混淆。X线片及CT检查有时也难以发现上颌窦内的?
Killian polyp is also called maxillary sinus nostril polyp. Killian first reported in 1906 the maxillary sinus nostril polyp and the relationship between the maxillary sinus, polyps originated in the maxillary sinus lesions within the mucosa. Occur in adolescents, clinically rare, reportedly accounted for about 3% to 6% of nasal polyps [1]. This polyp easily confused with nasopharyngeal neoplasms. X-ray and CT examination sometimes difficult to find inside the maxillary sinus?