Fig. 1A53-year-old woman with Rosai-Dorfman disease of breast. Left
breast craniocaudal mammogram shows 1.5-cm high-density mass with indistinct
margins (arrow).
Fig. 1C53-year-old woman with Rosai-Dorfman disease of breast.
Photomicrograph shows histiocytes with emperipolesis (arrowhead) in
background of lymphocytes, plasma cells, and fibrosis. (H and E,
x500)