Eighty-year-old man with rare chronic neutrophilic leukemia caused by CSF3R T618I mutation: A case report and review of literature

Figure 1 Histology of blood. Peripheral blood smear (Wright-Giemsa staining, × 500).

Figure 2 Histology of bone marrow biopsy. Bone marrow aspirate smear showing granulocytic proliferation, many mature neutrophils with toxic changes, and no increased blasts (Wright-Giemsa staining, × 500).

Figure 3 Sequencing of mutant sites. A: c.1260T>C (p.T420T) mutation; B: c.1853C>T (p.T618I) mutation; C: c.2514T>A (p.C838) mutation.