The Erythrocyte Count on Top of Bone Marrow Histology Discriminates Essential Thrombocythemia and Polycythemia Vera in JAK2v617f Mutated Prefibrotic Myeloproliferative Neoplasm with No or Minor Splenomegaly

Jan Acques Michiels^1,5*, Wilfried Schroyens¹, Jan Lindemans², Fibo WJ Ten Kate³, King H Lam³ and Hendrik De Raeve⁴

¹Department of Hematology, University Hospital Antwerp, Antwerp University, Belgium

²Departments of Clinical Chemistry and Pathology, Erasmus University Medical Center Rotterdam, The Netherlands

³Departments of Pathology, Erasmus University Medical Center Rotterdam, The Netherlands

⁴Department of Pathology, OLV Hospital Aalst and Free University Hospital, Brussels, Belgium

⁵European Working Group on Myeloproliferative Neoplasms (EWG.MPN), Goodheart Institute & Foundation5, Rotterdam, The Netherlands

^*Corresponding Author: Jan Acques Michiels, Senior Internist & Investigator, EWG, MPN, Goodheart Institute & Foundation, Rotterdam, Erasmus Tower, Veenmos 13, 3069 AT Rotterdam, The Netherlands, Tel: +316-26970534 Email: