Blastic plasmacytoid dendritic cell neoplasm: Two case reports

Figure 1 Skin lesions and the images of the hematoxylin-eosin and immunohistochemistry analyses for patient 1. The image above depicts multiple nodules and bruise-like lesions on the chest and back. A: There is an evident acellular infiltration zone between the tumor cells and the epidermis [hematoxylin-eosin (HE) staining, 100 ×]; B: Microscopically, the dermis is diffused with infiltrated medium-sized blast cell (HE staining, 400 ×); C: CD123 positive; D: CD4 positive; E: CD56 positive; F: Approximately 75% of Ki67 were positive; G: CD56 positive; H: Approximately 75% of Ki67 were positive.