Fig. 2. Histology of the breast bio-psy. (A) Diffuse infiltration of small to medium sized lymphoblasts with a high nuclear-to-cytoplasmic ratio is noted (hematoxylin and eosin stain, ×200). (B-E) The tumor cells are positive for CD34, CD3, CD7, and TdT, respectively (×200). (F) Ki-67 proliferation index is 40% (×200).
Clin Pediatr Hematol Oncol 2022;29:30-4
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