Blastic plasmacytoid dendritic cell neoplasm with skin and bone marrow involvement: Report of three cases

Figure 1 Case 1. A: Tumor cells were strongly and uniformly positive for CD123 with a membranous pattern; B: Diffuse lymphoid cells between the bone trabeculae, with medium-sized heterotypic nuclei (magnification, 400 ×). H&E: Hematoxylin and eosin.

Figure 2 Case 2. A: Neoplastic cells in the skin infiltrated mainly into the dermis, but not into the epidermis (magnification, 50 ×); B: Tumor cells were positive for CD4, with a membranous pattern.