Bone marrow aspirate, low power, WG stain, showing hypercellular particles
Higher power, bone marrow aspirate showing megaloblastoid change of erythroid precursors, with some vacuolization of erythroid percursors
Erythroid hyperplasia with megaloblastoid change and binucleation
Erythroid hyperplasia, megaloblastoid change
Prussian blue stain, ring sideroblasts
Prussian blue stain, ring sideroblasts
Variable megakaryocytic dysplasia (multiple separate small nuclei) present in small numbers in diagnostic marrow, variable in subsequent marrows