Fig. 1. Initial bone marrow aspiration demonstrated many blasts showed large and relatively abundant cytoplasm (A, original magnification ×400, Wright-Giemsa stain) and some blasts revealed the presence of Auer rod (arrow) (B, original magnification ×400, Wright-Giemsa stain). The blasts at relapsed bone marrow aspiration showed small to medium sized and high nuclear-cytoplasm ratio compared to those of initial diagnosis (C, original magnification ×400, Wright-Giemsa stain).

Clin Pediatr Hematol Oncol 2023;30:70-4

© 2023 Clin Pediatr Hematol Oncol