Fig. 1. Bone marrow aspirate findings at initial diagnosis of plasma cell myeloma (PCM) and the diagnosis of ALL in two patients. (A) Neoplastic plasma cells show medium size, round and eccentric nuclei, and blue cytoplasm at initial diagnosis of PCM in Case 1 (Wright stain, ×400). (B) Lymphoblasts show small to large size, fine chromatin pattern, one or two nucleoli, and moderate amount of cytoplasm and occasional cytoplasmic vacuoles at diagnosis of ALL in Case 1 (Wright stain, ×1,000). (C) Neoplastic plasma cells show medium size, round and eccentric nuclei, and blue cytoplasm at initial diagnosis of PCM in Case 2 (Wright stain, ×400). (D) Lymphoblasts show small to medium size, round nuclei and scanty cytoplasm at diagnosis of ALL in Case 2 (Wright stain, ×1,000).
