Figure 2From: Kikuchi-Fujimoto lymphadenitis imitating metastatic melanoma on positron emission tomography: a case reportKikuchi-Fujimoto disease histopathology A Sheet-like lymphohistiocytic infiltrate with crescentic histiocytes and abundant karyorrhectic debris (hematoxylin-eosin, 400x magnification). B Histiocytes are highlighted by CD68 (400x magnification). C Histiocytes co-express myeloperoxidase (400x magnification). D High proliferative index is highlighted by Ki-67 (400x magnification).Back to article page