The patient is a 43-year-old man with fatigue. A Complete Blood Count (CBC) shows the following:

WBC

4.0 - 11.0 K/uL

15.1

RBC

4.50 - 6.00 M/uL

3.97

Hgb

14.0 - 18.0 gm/dL

13.3

Hct

40.0 - 54.0 %

37.8

Platelet count

140 - 440 K/uL

336


Diff

Total Cells

119

Neutrophil %

42.0 - 66.0 %

16.0

Lymphocyte %

24.0 - 44.0 %

26.0

Monocyte %

2.0 - 7.0 %

4.0

Eosinophil %

1.0 - 4.0 %

52.0

Basophil %

0.0 - 1.0 %

2.0


Photomicrographs of the peripheral blood smear, H&E sections of bone marrow core biopsy and clot section, and Giemsa stain of bone marrow smears are shown.  

What is your diagnosis?

A. Systemic mastocytosis

B. Myeloid/lymphoid neoplasm with PDGFRA fusion gene

C. Acute myeloid leukemia with inv(16)/CBFB rearrangement 

D. Chronic eosinophilic leukemia, NOS


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