Figure 2. Skin biopsy taken from lesion showed evidence of leukocytoclastic vasculitis by light microscopy. There is a mild neutrophilic infiltrate in the wall of small vessel located in the superficial dermis. Also mild congestion and leukocytoclasis is also present. H&E, × 200.
Figure 3. (A, B) The lymph node excision showed atypical lymphoid infiltration (H&E, × 40, × 400). (C, D) Immunohistochemically, the neoplastic cells were positive for CD20 and kappa light chain (× 25, × 40). (E) Paratrabecular nodular infiltration was seen in the bone marrow (H&E, × 25). (F, G, H) The lymphoid cells expressed CD20 and kappa light chain; lambda was negative (× 25, × 40, × 40).