Oral lesion as the primary diagnosis of non-Hodgkin's lymphoma: a 20-year experience from an oral pathology service and review of the literature.

Purpose: We aimed to investigate the frequency and clinicopathological features of oral NHL in our institution as well as to compare the data gathered from other oral pathology and general pathology services published in the literature.

Methods: Clinical records of patients diagnosed with NHL exclusively affecting the oral cavity were reviewed from 1997 to 2017. Additionally, a review of the literature over a 20-year period was conducted aiming to examine articles on oral NHLs.