Locally advanced nasopharyngeal carcinoma: Computed tomography findings, clinical evaluation, and treatment outcome

Abstract

Purpose: We present our experience with computed tomography (CT) for delineating the extent of bone erosion in nasopharyngeal carcinoma (NPC) and propose that a new subdivision of Stage T4 disease be added to the staging criteria for cases of minimal bone disease, defined as erosion of the base of the sphenoid or the pterygoid plate(s) without cranial nerve (CN) involvement.