ABSTRACT HISTOPATHOLOGY PROFILE OF NASOPHARYNEAL CARCINOMA AT ARIFIN ACHMAD HOSPITAL RIAU PROVINCE 2021-2022 BY RIZKI NURFAJAR Nasopharyngeal carcinoma is a carcinoma that arises in the nasopharyngeal mucosa and shows microscopic or ultrastructural evidence of squamous differentiation. The etiology of nasopharyngeal carcinoma is not yet known with certainty, but nasopharyngeal carcinoma has…