Prognostic value of paranasopharyngeal extension of nasopharyngeal carcinoma: A significant factor in local control and distant metastasis

Abstract

Extensive paranasopharyngeal extension (Grade 2/3) was an independent prognostic factor associated with poorer treatment outcome, both in local control and distant metastasis. Ho's T2 disease should be further subclassified into T2a and T2b, which include Grade 0/1 and Grade 2/3 paranasopharyngeal disease, respectively.