A 49-year-old man comes to the physician for a 4-month history of fatigue. He has no past medical history. Vitals are within normal limits. Which of the following additional findings is most likely to be seen in this patient?
CD10-positive cells
CD15/30-positive cells
>10% plasma cells on bone marrow biopsy
50% blasts
Reactive granulocytosis
Smudge cells
t(9;22) translocation