The distribution of positive rate of MDM2 protien in tumor tissues and nearby mucosas and normal nasopharyngeal tissues were 19%,5%,4% respectively,there are significant difference.

• MDM2在鼻咽癌、癌旁上皮及正常粘膜上皮的阳性率分别为19%25、5%25、4%25,在癌组和非癌组表达有显著性差异。