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. 2019 Aug 22;105(4):951–960. doi: 10.3324/haematol.2019.230375

Figure 1.

Figure 1.

Histological features of primary histiocytic sarcoma (pHS). Cases involving lymph node (A) and tonsil (B) showing moderate nuclear atypia and abundant eosinophilic cytoplasm; Hematoxylin & Eosin (H&E) staining, original magnification ×400. The cells express (C) CD163; original magnification ×400 and (D) CD68; original magnification ×400. (E and F) Two extranodal (gastrointestinal tract) cases showing marked nuclear pleomorphism, multinucleated cells and foam cells; H&E stain, original magnification ×400.