HAEMA, cilt.8, sa.4, ss.701-703, 2005 (Scopus)
Extreme thrombocytosis is considered when platelet count is above the 1000000/μl. Although secondary thrombocytosis is much more frequent than primary thrombocytosis, autonomous thrombocytosis should also be kept in mind. In the literature, extreme thrombocytosis in chronic myeloid leukaemia (CML) is rare. Cases presenting with thrombocytosis and megakaryocyte hyperplasia in bone marrow analysis, are reported in the context of an essential thrombocythaemia (ET). We present a case with a platelet count of 9387000/μl. It was diagnosed as CML, but presentation doesn't resemble typical CML. Copyright © Hellenic Society of Haematology.