A Rare Case of Cutaneous Plasmacytosis in a Korean Male

Figure 3

(a) CD20 highlights a few aggregates of small B-lymphocytes. (b) CD138 shows the relative distribution of plasma cells around B-cell aggregates. (c) Kappa and (d) lambda immunohistochemistry shows a 3-4 : 1 ratio. (e) IgG is diffusely present in these plasma cells, while (f) IgM is mostly absent.

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