The Factors of Radiotherapy and Prognosis of 64 cases of Nasopharyngea Cancer with Bilateral Parapharyngeal Space involved

Puspose: To analysis the effect of radiotherapy in NPC with bilateral parcepharyngeal space involve and related factors of prognosis. Results : The totle 3 5-year survival rate were 64.1% and 36.7%.The 3-year survival rate is of no difference betweenthe combined group and non-combibned one (P0.05) and the 5-year survival ratewas relatively higher in cimbined face-neck field group (P0.01). Conclusion : In patients with NPC of bilateral paraphanyngeal space involve the forward effect in combinedface-neck field group is better than that in the non-combined group.The post radiotherapy CT scan is useful to know if it disapperal of the tumor in paraphargrgeal spaceand the forward effect of the radiotherapy.