Clonally Related Plasmablastic Lymphoma Simultaneously Occurring with Diffuse Large B-Cell Lymphoma

Figure 1

Hematoxylin and eosin- (H&E-) stained section of nasal mucosa (a, b). Immunohistochemical staining of CD20 (c) and CD138 (d). H&E staining showed diffuse proliferation of atypical lymphoid cells with prominent nucleoli and clear cytoplasm (a, b). Immunohistochemical staining revealed that atypical cells were positive for CD20 (c) and negative for CD138 (d).

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