Fig. 2. (A) Skin biopsy showing multiple plasma infiltration (H&E, ×200). (B) Atypical cells showing pleomorphism with hyperchromatic and enlarged nuclei (H&E, ×400). (C) Monoclonality for lambda light chain (lambda light chain, ×200). (D) Cells were stained positive for CD138 (CD138, ×200).