Biomedical Science(Degree) · Fourth Year · BIO403
Hematology
Hematology focuses on the study of blood, blood-forming organs, and blood-related disorders. This course is essential for biomedical science students preparing for examinations and laboratory-based careers in Zambia. It covers blood cell formation, anemia, leukemia, and coagulation disorders, all of which are key topics in …
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Hematology focuses on the study of blood, blood-forming organs, and blood-related disorders. This course is essential for biomedical science students preparing for examinations and laboratory-based careers in Zambia. It covers blood cell formation, anemia, leukemia, and coagulation disorders, all of which are key topics in biomedical assessments. Learners develop skills in interpreting hematological data and understanding disease mechanisms. The course supports career opportunities in diagnostic laboratories, hospitals, and research environments. By linking theory to clinical relevance, it prepares students for professional roles that require accuracy, critical analysis, and scientific responsibility.
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Topic 10
Platelets and Thrombopoiesis
This topic explores the formation, structure, and function of platelets, a key component in primary hemostasis. Tertiary-level content includes thrombopoiesis, platelet ultrastructure, platelet factors, and their role in adhesion, aggregation, and clot formation. Students in hematology and blood transfusion science will learn about platelet disorders, thrombocytopenia, and thrombocytosis. For Zambian diploma and degree students, this knowledge is vital for managing bleeding disorders, interpreting platelet counts, and understanding drug effects like heparin-induced thrombocytopenia. The topic aligns with laboratory syllabus requirements and prepares learners for practical assessments and professional certification in hematology, ensuring they can contribute effectively to patient care and diagnostic services in hospitals and clinics across Zambia.
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Topic 11Coming soon
Non-Hodgkin Lymphoma
This topic covers the broad and heterogeneous group of malignancies known as Non-Hodgkin Lymphomas (NHL). It is a core component of the haematology curriculum for Zambian university and college students. The material introduces the classification of NHL within the WHO framework, considering cell lineage (B-cell vs. T/NK-cell), site, and genetic features. It explains the critical clinical distinction between indolent (low-grade) and aggressive (high-grade) lymphomas, which dictates management urgency and potential for cure. The pathogenesis section highlights the importance of infectious agents (e.g., EBV, HIV, H. pylori) and frequent cytogenetic abnormalities, including translocations leading to oncogene overexpression. Clinical features are explored, noting the variable presentation with lymphadenopathy, extranodal involvement (e.g., GI tract, skin), and constitutional symptoms. The topic emphasises definitive diagnosis through lymph node biopsy with ancillary immunophenotypic and genetic studies. For tertiary learners, mastering the classification, behaviour, and diagnostic approach to NHL is imperative for clinical reasoning and laboratory practice. This knowledge is essential for passing professional exams and for contributing effectively to multidisciplinary cancer care teams in Zambia.
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Topic 12
Normal Haemostatic Mechanisms
This topic provides a detailed examination of the physiological process of haemostasis, encompassing the vascular, platelet, and coagulation phases. Tertiary students will study the intricate coagulation cascade, including intrinsic, extrinsic, and common pathways, and the roles of all coagulation factors. The content is fundamental for understanding how the body prevents blood loss and maintains vascular integrity. For university and college learners in Zambia, this forms the basis for diagnosing coagulopathies like hemophilia and DIC. Mastery of this topic is essential for passing hematology examinations and for practical application in clinical laboratories, enabling students to interpret coagulation screening tests such as PT, APTT, and thrombin time accurately, a core competency in tertiary medical laboratory education.
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Topic 13
Acute Lymphoblastic Leukaemia
This topic provides an in-depth study of Acute Lymphoblastic Leukaemia (ALL), the most common childhood haematological malignancy. It is vital for Zambian tertiary students in biomedical sciences and medicine. The content covers the epidemiology, noting the peak incidence in childhood and a secondary rise in adults, and the predominance of B-cell lineage. The pathogenesis is explored, including the model of prenatal genetic initiation (e.g., ETV6-RUNX1 translocation) and postnatal promoting events, potentially related to immune response to infection. The WHO genetic classification of ALL is detailed, highlighting its prognostic importance. Clinical features resulting from bone marrow failure (anaemia, infection, bleeding) and organ infiltration (lymphadenopathy, hepatosplenomegaly, CNS involvement) are thoroughly explained. Diagnostic criteria are emphasised, including peripheral blood and bone marrow morphology (>20% blasts), essential immunophenotyping (to distinguish B-ALL from T-ALL), and critical cytogenetic/molecular analysis for risk stratification. For university and college learners, excelling in this topic means understanding not just the diagnosis of ALL, but the genetic underpinnings that guide modern, risk-adapted therapy. This knowledge is directly applicable in clinical and laboratory settings and is frequently examined in tertiary-level assessments.
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Topic 14
Blood Groups and Transfusion
This topic covers the principles of blood group serology, focusing on the ABO and Rhesus systems, their genetics, and clinical significance in transfusion medicine. Tertiary education students in blood transfusion science and hematology will learn about antigen-antibody reactions, compatibility testing, and transfusion reactions. The material includes the distribution of blood groups in populations like Zambia and the UK, highlighting its global and local relevance. For Zambian students, this knowledge is critical for safe blood banking practices, preventing hemolytic disease of the newborn, and managing transfusion services. It directly supports the syllabus for professional certifications and prepares learners for examinations and real-world scenarios in hospital blood banks, a vital component of tertiary healthcare education.
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Topic 15
Acute Myeloid Leukaemia
This comprehensive topic addresses Acute Myeloid Leukaemia (AML), the most common acute leukaemia in adults. It is a cornerstone of advanced haematology education for Zambian university and diploma students. The material defines AML based on the accumulation of myeloid blast cells (>20% in marrow) and explains its pathogenesis through acquired mutations in genes regulating proliferation, differentiation, and apoptosis (e.g., FLT3, NPM1, DNMT3A). Both the FAB morphological and the contemporary WHO classification systems are covered, with the latter emphasising genetic abnormalities. The clinical presentation, dominated by sequelae of bone marrow failure (severe infections, anaemia, bleeding) and occasional tissue infiltration (e.g., gums, skin), is detailed. The diagnostic laboratory evaluation is a major focus, including peripheral blood smear examination for blasts and Auer rods, bone marrow assessment, and the pivotal role of cytochemistry (Myeloperoxidase, Sudan Black B) and immunophenotyping (CD13+, CD33+) in confirming myeloid lineage. For tertiary learners, mastery of AML requires understanding the link between genetic subtypes, clinical behaviour, and prognosis. This knowledge is essential for interpreting lab reports, contributing to treatment discussions, and succeeding in professional examinations for careers in haematology, oncology, or medical laboratory science in Zambia.
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Topic 16
Chromosomes and Genetic Disorders
This topic integrates cytogenetics and molecular hematology, covering human chromosome structure, numerical and structural abnormalities, and their clinical consequences like Down syndrome and Turner syndrome. Tertiary students will explore the genetics of sex determination, mutations, and the classification of genetic disorders (single gene, chromosomal, multifactorial). For university learners in Zambia pursuing medical genetics or hematology, this is crucial for understanding congenital disorders, cancer biology, and genetic counseling. The topic aligns with advanced diploma and degree curricula, providing the scientific basis for diagnosing thalassemias, hemoglobinopathies, and leukemias. It prepares students for examinations that test their ability to correlate genetic defects with clinical phenotypes, a high-level skill in tertiary medical science education.
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Topic 17
Chronic Lymphoid Leukaemias
This topic explores the spectrum of Chronic Lymphoid Leukaemias (CLL), diseases characterised by the accumulation of mature lymphocytes in the blood. It is designed for tertiary students in Zambia pursuing specialisation in haematology or laboratory medicine. The focus is primarily on B-cell diseases, especially Chronic Lymphocytic Leukaemia (CLL), covering its epidemiology, genetic predisposition, and pathogenesis centred on defective apoptosis. The clinical presentation is detailed, ranging from incidental lymphocytosis to symptomatic lymphadenopathy, splenomegaly, and immunosuppression. Diagnostic criteria, including absolute lymphocytosis with a characteristic immunophenotype (CD19+, CD5+, weak surface immunoglobulin), are emphasised. The topic also explains prognostic markers like CD38 and ZAP70, and the utility of staging systems (Rai, Binet). Other B-cell entities like Prolymphocytic Leukaemia (PLL) and Hairy Cell Leukaemia (HCL) are contrasted based on morphology and clinical features. A brief overview of key T-cell leukaemias (e.g., T-PLL, Adult T-cell Leukaemia/Lymphoma) is also included. For university and college learners, understanding the indolent nature, diagnostic workup, and monitoring of these chronic leukaemias is essential for clinical management and laboratory diagnosis. This knowledge is vital for exam success and for practising in settings where these conditions are increasingly diagnosed.
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Topic 18
Anemia: Classification and Pathophysiology
This core hematology topic provides a systematic approach to anemia, covering aetiological, cytometric, erythrokinetic, and biochemical classifications. Students will study anemia due to blood loss, defective formation, and increased destruction. Detailed focus is given to nutritional anemias (iron, B12, folate), aplastic anemia, anemia of chronic disease, and hemolytic anemias. For tertiary students in Zambian colleges and universities, this is paramount for clinical diagnosis and management, addressing conditions highly prevalent in the region such as iron deficiency and sickle cell disease. The topic aligns perfectly with examination blueprints, testing students' ability to differentiate anemias based on laboratory findings and clinical features, a critical competency for any medical laboratory scientist or clinician.