polypoid protrusion composed of hyperplastic lymphoid tissue Image

reactive type germinal centers lies in close proximity to one another displacing the epithelium Image

no lymphoepithelial lesions seen; Image

CD20 stains the germinal centers and ... Image

the inverse pattern is seen with CD3 which shows a characteristic reactive distribution Image

germinal centers are CD5 negative Image

CD10 highlights germinal centers Image

bcl2 Image

negative for cyclin D1 helps exclude mantle cell lymphoma (what about those "D1 negative ones?) Image

Mimics lymphoma