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(A) This is a section of retrieval tissue dominated by monocytes (Stain, hematoxylin & eosin [H&E]; original magnification, ×20). (B) Perivascular infiltration by lymphocytes was observed as described by Willert et al. [42] (Stain, CD20; original magnification, ×20) (C) Necrosis is seen in the revision tissues (Stain, H&E; original magnification, ×20).
