Uncommon Presentation of a Benign Nasopharyngeal Mass in an Adolescent: Comprehensive Review of Pediatric Nasopharyngeal Masses

Figure 5

High Power Field. Reactive germinal center. Note the “polarization” of the follicle. The dark zone (at the top in this picture) is made up of immature lymphocytes (ie, centroblasts), and the light zone (at the bottom in this picture) is made up of more mature centrocytes which mature and then move out into the mantle and marginal zones further to the bottom.