Primary myelofibrosis (PMF) is a Philadelphia chromosome-negative, clonal, myeloproliferative neoplasm (MPN) that is often but not always accompanied by the driver mutations JAK2V617F , calreticulin exon 9 ( CALR ), and the thrombopoietin receptor, MPL515L/K . PMF is clinically characterized…
Essential thrombocythemia (ET) is a chronic myeloproliferative neoplasm (MPN) characterized by platelet counts in excess of 450 × 10 9 /L, profound bone marrow (BM) megakaryocyte hyperplasia, leukocytosis, splenomegaly, a clinical course punctuated by hemorrhagic and/ or thrombotic episodes, and…
Under normal conditions, the red blood cell (RBC) mass in humans is tightly controlled and remains relatively constant in a given individual. The numbers of senescent RBCs lost daily are replaced by newly formed ones by a carefully controlled network…
Dedicated to the loving memory of Eta Najfeld, MD, a Holocaust survivor and an amazing mother . Over the past 66 years the cytogenetic analysis of hematologic malignancies has been an area of prolific growth. Chromosome studies and karyotype analysis…
Primary myelofibrosis (PMF) is a Philadelphia chromosome-negative, clonal, myeloproliferative neoplasm (MPN) that is often but not always accompanied by the driver mutations JAK2V617F , calreticulin exon 9 ( CALR ), and the thrombopoietin receptor, MPL515L/K . PMF is clinically characterized…
Essential thrombocythemia (ET) is a chronic myeloproliferative neoplasm (MPN) characterized by platelet counts in excess of 450 × 10 9 /L, profound bone marrow (BM) megakaryocyte hyperplasia, leukocytosis, splenomegaly, a clinical course punctuated by hemorrhagic and/ or thrombotic episodes, and…
Under normal conditions, the red blood cell (RBC) mass in humans is tightly controlled and remains relatively constant in a given individual. The numbers of senescent RBCs lost daily are replaced by newly formed ones by a carefully controlled network…
Dedicated to the loving memory of Eta Najfeld, MD, a Holocaust survivor and an amazing mother . Over the past 66 years the cytogenetic analysis of hematologic malignancies has been an area of prolific growth. Chromosome studies and karyotype analysis…
General Overview and Incidence Pediatric hematology/hematopathology spans the spectrum of benign, malignant, and neoplastic mimickers. Neoplastic lymphoid, myeloid, and histocytic neoplasms follow criteria in the updated World Health Organization (WHO) 2017 classification similar to adults. Examples of common entities or…
General Overview and Incidence Precursor lymphoid neoplasms or acute lymphoblastic leukemia (ALL) is the second most common leukemia affecting adults with about 1.6 per 100,000 and 6500 cases per year in the United States. In 2018, an estimated 5960 new…