Bone marrow aspirate from a patient with the hypergranular variant of acute promyelocytic leukemia (APL; formerly described in the French-American-British [FAB] classification as the M3 variant of acute myeloid leukemia). The cells in the top center and far left contain numerous intertwining Auer rods (arrows). (Wright-Giemsa stain)
From Brunning RD, McKenna RW. Tumors of the bone marrow. Atlas of tumor pathology (electronic fascicle), Third series, fascicle 9, 1994, Washington, DC. Armed Forces Institute of Pathology.