Extranodal Rosai-Dorfman Disease : Testis
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![RosaiDorfmanDisease24_Testis_resized.jpg](/slides-13/slides/RosaiDorfmanDisease24_Testis_resized.jpg)
Comments:
Rosai-Dorfman disease (RDD) of the testis. Higher magnification showing a couple of atrophic seminiferous tubules and a few histiocytes exhibiting emperipolesis. Like other locations, S-100 will stain the lesional histiocytes and highlight emperipolesis. Image courtesy of: Andres Matoso, MD, Dept. of Pathology, Johns Hopkins Hospital, Baltimore, MD, USA; used with permission.