Intraoral Extranodal Natural Killer Cell/T-Cell Lymphoma of the Hard Palate

Figure 4

Histopathology findings show a diffuse proliferation of medium-to-large pleomorphic lymphoma cells with regular nuclear membranes, some distinct nucleoli, unclear cells, and cytoplasm borders, which were arranged in dense cell sheets with a fine vascularized and inflammatory background. Much mitotic and apoptotic activity was also observed, with no evidence of specific differentiation.