A 72-year-old man comes to the physician for a 4-month history of increasing fatigue. Physical examination shows painless lymphadenopathy of the neck, armpits, and groin. Vitals are normal. A blood smear is shown. Which of the following additional findings is most likely to be seen in this patient?
t(9;22) translocation
t(15;17) translocation
CD5 and CD23 positivity
CD10 and TdT positivity
CD15 and CD30 positivity
