Canine Leukemia Study Guide
Overview and Clinical Importance
Leukemia is a malignant neoplasm of hematopoietic cells arising in the bone marrow (or occasionally the spleen), characterized by an abnormal proliferation of white blood cells. In dogs, leukemia represents an important but relatively uncommon category of hematologic malignancy. Understanding the classification, diagnosis, and management of canine leukemia is essential for the NAVLE.
Leukemia is classified by two key characteristics: the stage of cell maturation (acute versus chronic) and the cell lineage (lymphoid versus myeloid). This creates four main categories: Acute Lymphoblastic Leukemia (ALL), Chronic Lymphocytic Leukemia (CLL), Acute Myeloid Leukemia (AML), and Chronic Myeloid Leukemia (CML).
Classification of Canine Leukemia
Leukemia classification is critical because it determines treatment approach and prognosis. The classification system uses two main axes:
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