PMC9946272_01
Bone marrow biopsy (4x magnification).. The bone marrow biopsy at low magnification shows hypercellularity as noted by approximately 90% cellularity.
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FIG1
An ultrasound of the abdomen showed normal spleen size and echotexture. A bone marrow biopsy and aspirate were performed to reveal a hypercellular bone marrow of approximately 90% cellularity (Figure 1).
Bone marrow biopsy (20x magnification).. This higher magnification shows numerous erythroid precursors as noted by variable-shaped, mononuclear cells with dense chromatin nuclear staining. These erythroid precursors show leftward-shifted maturation stages.
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FIG2
The hypercellularity is mostly due to increased erythroid precursors with leftward shifted maturational stage (Figure 2).