1. Oil Red O positive vacuolated blasts in a case of CD45 negative, CD19 negative B- lymphoblastic leukemia 
Diana O. Treaba, MD, Allison Chen, Chad Ellermeier, MD, Bradley DeNardo, MD, Rachel Altura, MD 
Human Pathology: Case Reports 
Volume 6, Pages 1-7 (December 2016)
DOI: /j.ehpc
Copyright © 2016 The Authors Terms and Conditions

2. Fig. 1 CT image of the anterior mediastinal mass.
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
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3. Fig. 2
Blast with intracytoplasmic vacuoles; peripheral blood smear, Wright–Giemsa stain, immersion oil, 1000×. (A) Numerous vacuolated blasts; bone marrow aspirate smear, Wright–Giemsa stain, immersion oil, 1000× (B).
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
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4. Fig. 3
Blasts positive with Oil Red O; bone marrow aspirate, immersion oil, 1000×. (A) Anti-myeloperoxidase antibody; bone marrow biopsy, 500× (B).
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
Copyright © 2016 The Authors Terms and Conditions

5. Fig. 4
Flow cytometry immunophenotypic analysis of the bone marrow aspirate. The blasts are CD45 negative.
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
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6. Fig. 5
Flow cytometry immunophenotypic analysis. The blasts are CD34 positive and CD19 negative (A), and are partially surface CD22 positive and CD20 negative (B).
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
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7. Fig. 6
Bone marrow biopsy. The blasts are positive for PAX-5 (A) and TdT (B); 500× immersion oil.
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
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8. Fig. 7
Bone marrow biopsy. The blasts are variably positive for CD43 (A) and less than 5% of the blasts are positive for CD79a (B); 500× immersion oil.
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
Copyright © 2016 The Authors Terms and Conditions

9. Fig. 8
Karyotype, bone marrow aspirate, of the current B lymphoblastic leukemia case.
Human Pathology: Case Reports 2016 6, 1-7DOI: ( /j.ehpc )
Copyright © 2016 The Authors Terms and Conditions