The incidence rates of local recurrence,neck recurrence and metastasis ,distance met astasis were 14.5%,23.2%,21.7%in hypoxic R T g roup and 12.5%,20.8%,18.8%in reg ular RT g roup,respectiv ely(P>0.05).

• 肿瘤局部复发、颈淋巴结复发转移和远处转移率在低氧组分别为14.；5%25、23