A 15-Year-Old Boy Is Complaining of Severe Headaches;he Has a White

A 15-year-old boy is complaining of severe headaches;he has a white count of 76.0 × 10⁹/L,platelet count of 55 × 10⁹/L,and a hematocrit of 33%.When a white cell differential is performed,most of the nucleated cells are blasts.They are CD2,CD4,and CD8 positive.The TdT marker is expressed.What is the most likely diagnosis?

A) immature-B cell acute lymphoblastic leukemia
B) T-cell acute lymphoblastic leukemia
C) acute myeloid leukemia without maturation
D) acute myeloid leukemia with maturation

Correct Answer:

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