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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Rosai-Dorfman Disease | 4D3 Rosai-Dorfman Dz (Case 4) S100 2 copy.jpg
There are numerous S-100 immunoreactive cells, ranging from foamy histiocytic cells to spindled cells. Some of these cells have intracytoplasmic lymphocytes (arrows, 4D3). (S100 IHC)
