Page 190 - Clinical Hematology Atlas

174 SECTION FOUR LEUKOCYTES

POLYCYTHEMIA VERA

A B
FIGURE 17–3A Peripheral blood (original FIGURE 17–3B Bone marrow (original
magnification 31000). magnification 3500).

MORPHOLOGY
Peripheral Blood:
LEUKOCYTES
Normal or increased
• Neutrophilia with few metamyelocytes,
rare myelocytes
• Promyelocytes and myeloblasts extremely
rare
• 6 Eosinophilia and/or basophilia
ERYTHROCYTES
Absolute erythrocytosis

• Hemoglobin . 18.5 g/dL in male indi-
viduals
• Hemoglobin . 16.5 g/dL in female
C individuals
FIGURE 17–3C Bone marrow (original PLATELETS
magnification 31000). Normal or increased
Bone Marrow:
• Hypercellular with panmyelosis
• M:E ratio usually normal
• Megakaryocytes may be abnormal in size
and morphology