Abstract:T his peripheral blood smear from a 12-year-old child, cytomegalovirus and Epstein-Barr virus negative, 2 months after allogeneic stem cell transplantation (AlloSCT) for acute myeloid leukemia with maturation, shows atypical lymphocytes (panel A; for both panels, original magnification 3100, May-Grünwald Giemsa stain). Laboratory studies showed 42% homogenous atypical lymphocytes in a post-AlloSCT leukopenia (1.6 3 10 9 /L). These cells show an irregular nuclear outline, a round nucleolus, moderately condensed… Show more
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