Clinical Analysis of Cases of Parotid Gland Cancer Treated by Radical Surgery

Abstract

We reviewed the data of 66 patients with parotid gland cancer who were treated by radical surgery. The 5-year overall survival (OS) rates according to the T classification were: T1: 100%; T2: 92.4%; T3: 56.1%; and T4: 68.1% (P = 0.082). The 5-year OS rates according to the disease Stage (St) classification were: St I: 100%; St II: 95.5%; St III: 88.9%; and St IV: 55.4% (P = 0.002). The 5-year OS rates according to the histological malignancy grade were: low grade: 100%; intermediate grade: 83.3%; and high grade: 53.2% (P < 0.001). St IV and high malignancy grade were predictive of an unfavorable prognosis. The treatment results of this study are mostly consistent with those reported previously.