A 17-year-old boy presented with TLC of 138 x 109/ L with 80% blasts on the peripheral smear. Chest X-ray demonstrated a large mediastinal mass. Immunophenotyping of this patient's blasts would most likely demonstrate -

Question

Accepted Answer

An immature T cell phenotype (Tdt/D34/CD7 positive)

Answer

No surface antigens (null phenotype)

Answer

Myeloid markers, such as CD13, CD33 and CD15

Answer

B cell markers, such as CD19, CD20 and CD22

A 17-year-old boy presented with TLC of 138 x 109/ L with 80% blasts on the peripheral smear. Chest X-ray demonstrated a large mediastinal mass. Immunophenotyping of this patient's blasts would most likely demonstrate -

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