A 24-year-old woman presented to her primary care physician for persistent bilateral otitis media and frequent night sweats. Laboratory evaluation revealed a white blood cell count of 26 000/mL with 84% blasts on differential, hemoglobin 6.8 g/dL, and platelet 90 000/mL. Her total serum lactate dehydrogenase level was 888 U/L. She underwent a diagnostic bone marrow aspirate and biopsy, which de...
