Myeloproliferative Neoplasias - Clinical Medicine

Explore the complex world of myeloproliferative neoplasias through this comprehensive medical lecture that breaks down the pathophysiology, clinical features, and diagnostic evaluation of these hematologic disorders. Begin with an understanding of normal myeloid hematopoiesis before diving deep into the molecular pathogenesis of MPNs, including key driver mutations such as JAK2 V617F, CALR, and MPL. Master the four major classic MPNs—Polycythemia Vera, Essential Thrombocythemia, Primary Myelofibrosis, and Chronic Myeloid Leukemia—by examining their unique clinical findings, laboratory patterns, and mutation profiles. Discover the hallmark features of each condition, from erythrocytosis and aquagenic pruritus in PV to the BCR-ABL fusion gene and leukocytosis in CML. Learn to identify potential complications including thrombosis, hemorrhage, leukemic transformation, and marrow failure through visual aids, flowcharts, and comparative tables that explain diagnostic criteria and peripheral smear findings. Understand treatment strategies ranging from phlebotomy and hydroxyurea to JAK inhibitors like ruxolitinib and tyrosine kinase inhibitors such as imatinib for CML, gaining a clear and organized approach to these complex hematologic conditions for clinical practice.