Table 2: WHO criteria for the diagnosis of essential thrombocythemia.
1- Thrombocytosis > 600 G / l persistent |
|
2- Bone marrow biopsy: |
Proliferation of the megakaryocytic line with high proportion of large mature megakaryocytes |
|
3- No index of: |
· Polycythemia vera |
· Chronic myelogenous leukemia |
· Osteomyelofibrosis |
· Myelodysplastic syndrome |
· Reactive thrombocytosis |