FIGURE 4 IHC analysis of DLBCLs demonstrated two separated DLBCLs show diffusely positively for CD20 (T1, A: IHC, original magnification x 200; T2, B: IHC, original magnification x 200), and positive for proliferating Ki-67 labeling index with 90% of involvrf tumor cells (T1, C: IHC, original magnification x 200; T2, D: IHC, original magnification x 200).