Bone marrow aspirate smears from two different patients with multiple myeloma, illustrating a preponderance of mostly mature-appearing plasma cells with eccentrically placed nuclei and prominent Golgi zones (arrow) (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.