gms | German Medical Science


Figure 3: Ethmoid sinus biopsy specimen A: H&E stain (100x) showed a piece of lymphoid tissue covered by respiratory epithelium (black arrow) and the stroma was densely infiltrated by neoplastic lymphoid cells (red arrows) B: H&E stain (400x) showed dense infiltration of the stroma with neoplastic lymphoid cells. There were prominent scattered areas of necrosis and apoptotic bodies seen (black arrow).