Rosai-Dorfman disease in the spleen of a pediatric patient: A case report

Figure 4 Pathologic images of splenic masses. A: Resected specimen showed contour bulging splenic mass; B: Cut surface of the resected specimen; C: Hematoxylin and eosin-stained section (200 ×) showed histiocytic proliferation with emperipolesis (arrows); D: Proliferating histiocytes were positive for S-100 protein stained section (400 ×); E: Proliferating histiocytes were positive for CD68 antigen stained section (400 ×); F: proliferating histiocytes were negative for CD1a stained section (400 ×).