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Lesions related to Rosai–Dorfman disease. A. Lesions of the pericardium. B. Lesions of the pleural cavity and lung. C. Lesions of the mass on the radicle of the mesentery. D. S100 positive. E. CD68 positive. F. CD1a negative. Scale bar 50 μm, except for (B) 400 μm.
