De Novo CD5 Negative Blastic Mantle Cell Lymphoma Presented with Massive Bone Marrow Necrosis without Adenopathy or Organomegaly

Figure 3

Flow cytometry analysis using side scatter/CD45 gating strategy; the gated population of cells (red) show bright CD45 positivity with expression of CD19 and FMC7 (45%) monotypic lambda light chain. These cells were negative for CD10, CD5, CD23, and CD34.