METHODS: Cases of parotid gland malignancy were extracted from the SEER database for
1988 to 1998. Kaplan-Meier survival analysis was conducted for the most common tumor
histologies. Cox proportional hazards modeling was conducted to determine the influence of
age, gender, histopathology, grade, size, regional modal status, extraglandular extension,
and radiation therapy on survival. Subset analysis was conducted for mucoepidermoid …