PMC6057401_01
Area of hypercellular bone marrow with red cell aplasia.
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fig1
Erythropoiesis was markedly decreased with only very rare proerythroblasts present (Figure 1).
Bone marrow with hypercellularity and increased mast cells.
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fig2
Several perivascular fibrotic areas containing mast cell aggregates were also identified (Figures 2 and 3).
Clot section which shows hypercellularity and increased mast cells.
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fig3
Several perivascular fibrotic areas containing mast cell aggregates were also identified (Figures 2 and 3).
Clot stained with CD2 which is positive in mast cells.
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fig4
The mast cells were positive for mast cell tryptase and aberrant expression of CD2 and CD25 (Figures 4 and 5). c-KIT and D 816 V mutations were detected.
Clot stained with CD25 which is positive in mast cells.
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fig5
The mast cells were positive for mast cell tryptase and aberrant expression of CD2 and CD25 (Figures 4 and 5). c-KIT and D 816 V mutations were detected.