Dysplastic marrow morphology following lenalidomide therapy. Representative images of the bone marrow aspirate from September 2013, showing mildly decreased cellularity for age (A; magnification ×60, hematoxylin and eosin stain) with relative erythroid hyperplasia, slightly increased frequency of blasts (B, arrows; magnification ×240, Wright-Giemsa stain), nuclear abnormalities in the erythroid precursors (C, arrows; magnification ×600, Wright-Giemsa stain), and dysplastic small megakaryocytes with binucleation and separated nuclei (D, arrow; magnification ×240, Wright-Giemsa stain).