Difference between revisions of "Myeloproliferative neoplasms"

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* enlarged spleen  
* enlarged spleen  
* increased clotting
* increased clotting
==Polycythemia vera==
*ICD-O: 9950/3
*Median age: 60 years.
*Median survival: >10years.
*Typical course:
**Prodromal stadium: Mild erythrocytosis.
**Polycythemic phase: Incereased RBC count.
**Post-polycythemic ("spent") phase: Ineffective hematopoiesis, bone marrow fibrosis.
*Transformation in [[AML]] possible (2-3%).
===Morphology===
*Panmyelosis.
*Many megakaryocytes in bone marrow section.
*Increased cellularity of bone marrow (35-100%).
*Teardrop-RBC cells (dacryocytes) in late stage.
*Fibrosis (reticulin stain).


==Images==
==Images==
<gallery>
<gallery>
File:Thrombocytosis.jpg | Thrombocythemia. Peripheral blood (WC/Erhabor Osario)
File:Thrombocytosis.jpg | Thrombocythemia. Peripheral blood (WC/Erhabor Osario)
File:Polycythemia_vera,_blood_smear.jpg | Polycythemia vera. Peripheral blood (WC/AFIP)
File:Polycythemia_vera,_blood_smear.jpg | Polycythemia vera. Peripheral blood (WC/Orlandi Mourao)
File:Teardrop Cells smear 2009-09-22.JPG | Teardrop RBC cells in polycythemia vera. Peripheral blood (WC/AFIP)
File:Essential Thrombocythemia, Peripheral Blood (10189570483).jpg | Essential thrombocythemia. Peripheral blood (WC/Ed Uthman)
File:Essential Thrombocythemia, Peripheral Blood (10189570483).jpg | Essential thrombocythemia. Peripheral blood (WC/Ed Uthman)
File:Essential thrombocythemia (2).jpg | Essential thrombocythemia. Bone marrow (WC/KGH)
File:Essential thrombocythemia (2).jpg | Essential thrombocythemia. Bone marrow (WC/KGH)
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