A 54-year-old man presented with a slow-growing yellow nodule on the glans penis. Histology revealed a dense nodular infiltrate throughout the entire dermis, composed of a predominance of large mononucleated… Click to show full abstract
A 54-year-old man presented with a slow-growing yellow nodule on the glans penis. Histology revealed a dense nodular infiltrate throughout the entire dermis, composed of a predominance of large mononucleated histiocytes with a few multinucleated cells; the overlying epidermis was slightly hyperplastic. The cells were positive for CD68 and negative for S100 and CD1a.
               
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