Kwong and Cheng’ recently reported a case of chronic neutrophilic leukemia (CNL) with absence of Philadelphia (Ph) chromosome and no bcr rearrangement. They showed the clonal nature of CNL by the methylation status of the X-linked hypoxanthine phosphoribosyl transferase. (HPRT) gene. The clonal myeloproliferative nature of CNL was first documented in our report of a case of polycythemia vera (P...

Chronic myelogenous leukemia (CML) is a myeloproliferative disorder that normally presents in middle-aged adults. Renal infiltration and extramedullary hematopoiesis in renal tissue has been rarely reported. This case report presents a patient with CML and renal insufficiency who developed gross hematuria. Efforts at controlling the hematuria led to a cascade of events propelled by the underlyi...

This article reports the molecular diagnosis findings regarding chronic myeloproliferative neoplasms made in a Molecular Biology Laboratory over a seven years’ experience (between 2009 and 2015). Ritus Biotec ltd is an ELN (European Leukemia Net) certified diagnostic laboratory for quantification of BCR-ABL. 1373 patients were subjected to Jak2 V617F testing in this time frame. The patients wer...

By D. L. DUNGwORTH, NI. GOLDMAN, J. W. SWITZER AND D. H. MCKELVIE T HE TERM “MYELOPROLIFERATIVE DISORDER” was introduced by 2 to embrace a complex array of diseases characterized by irreversible proliferation of one to several of the bone marrow cell lines, and includes such conditions as granulocytic leukemia, myelofibrosis with myeloid metaplasia, polycythemia vera and erythremic myelosis. Th...

An 83 year old women presented with a myeloproliferative disorder involving the myeloid and megakaryocytic lines, and characterised by mature neutrophil leucocytosis. There was a high/normal neutrophil alkaline phosphatase activity and absence of the Philadelphia chromosome, features compatible with a diagnosis of chronic neutrophilic leukaemia (CNL). Southern blot analysis of the patient's DNA...

A 45-yr-old female presented with a rapidly enlarging bony tumor that was eventually identified as a Philadelphia chromosome (Ph1)-positive myeloproliferative disorder with extramedullary blastic transformation. This transformation occurred in the absence of demonstrable chronic or acute leukemic phase. She had no history of a chronic or prodromal illness in spite of a bone marrow biopsy showin...

Pulmonary hypertension (PH) is a severe haemodynamic disorder in which the pulmonary artery pressure is persistently elevated, leading to right-sided heart failure and death. Recently, chronic myeloproliferative diseases associated with pulmonary hypertension were included in the group 5 category, corresponding to PH for which the aetiology is unclear and/or multifactorial. In this review we wi...

By D. L. DUNGwORTH, NI. GOLDMAN, J. W. SWITZER AND D. H. MCKELVIE T HE TERM “MYELOPROLIFERATIVE DISORDER” was introduced by 2 to embrace a complex array of diseases characterized by irreversible proliferation of one to several of the bone marrow cell lines, and includes such conditions as granulocytic leukemia, myelofibrosis with myeloid metaplasia, polycythemia vera and erythremic myelosis. Th...

Venous thromboembolism is common in subjects with chronic myeloproliferative disorders and is a recognized presenting feature of occult myeloproliferation. We report the case of a young woman who presented with acute thrombosis in the right jugular vein and pulmonary embolism. Splenomegaly and myeloid proliferation with bone marrow fibrosis, in the absence of the criteria for typical myeloproli...