Objectives: To determine the expression levels of epidermal growth factor receptor (EGFR) and its prognostic value in undifferentiated carcinoma (UC) of the nasopharynx.
Study Design: A prospective study of 75 patients diagnosed with UC over a 4-year period in a tertiary care hospital.
Materials And Methods: Postnasal space biopsies were obtained and processed, and immunohistochemical staining was performed.