BM examination. (A) Diamond-Blackfan anemia. BM aspirate shows a marked myeloid predominance. (B) Acquired aplastic anemia. High-power image of a hematoxylin and eosin-stained BM biopsy section from a teenage girl showing profound hypocellularity. The few remaining hematopoietic cells are lymphocytes, plasma cells, and macrophages with pigment in their cytoplasm. (C) Congenital dyserythropoietic anemia (CDA) type II. BM aspirate shows binucleated and multinucleated erythroid precursors. (D) Neuroblastoma. BM biopsy shows clumps of metastatic neuroblastoma cells. These images were originally published in the ASH Image Bank. (A) Amy Duffield, Diamond Blackfan Anemia Aspirate, 2015, #00060078. (B) Kristian T. Schafernak, Acquired Aplastic Anemia, 2016, #00060876. (C) Kristian T. Schafernak, Congenital Dyserythropoietic Anemia, Type II, 2016, #00060891. (D) Suzanne Vercauteren. Neuroblastoma Bone Marrow, 2015, #00060131. © The American Society of Hematology.