Relationship between the occult tonsillar primary and node metastasis regarding HPV status and p16 expression.

*Symmetry of HPV/p16 phenotype between the occult tonsillar primary and node metastasis was examined using the kappa test. HPV: human papillomavirus.采用Kappa检验（Kappa test）分析隐匿性扁桃体原发灶与淋巴结转移灶之间HPV/p16表型的一致性。 HPV即人类乳头瘤病毒（human papillomavirus）。