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Kikuchi lymphadenopathy of a cervical lymph node. A) Prominent tissue necrosis with extensive apoptosis, mostly of histiocytes (inset) (hematoxylin and eosin; x40). B) Fibrinoid necrosis with abundant nuclear fragmentation (inset) but no leukocytic inflammatory infiltrate (hematoxyline and eosin; x200). C) Sheets of proliferating histiocytes (hematoxylin and eosin; x400).
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Frequent plasma cells and plasmacytoid monocytes were also noted (Figure 1).
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