Figure 2.

Bone marrow findings. (A) Markedly hypocellular marrow (H&E, magnification ×40); (B) moderate reticulin fibrosis (reticulin stain, magnification ×200). (C) Erythroid dysplasia: nuclear budding; (D) nuclear cytoplasmic dyssynchrony; (E) binucleation. (F) Myeloid dysplasia: hypogranulated granulocyte with uneven distribution of cytoplasmic granules; (G) pelgeroid nuclei; (H) ring nucleus. (I, J, K) Megakaryocytic dysplasia: megakaryocytes with multiple separated nuclear lobes; (K) widely separated nuclei.