The disease is categorized by how fast it progresses and the type of blood cell it affects: By Progression
Affects the lymphoid cells (lymphocytes), which form lymphatic tissue and the immune system. leukemia
Progresses rapidly and involves immature cells (blasts) that cannot function normally; requires immediate, aggressive treatment. The disease is categorized by how fast it
Leukemia is a group of blood cancers that typically begin in the bone marrow and result in the rapid production of abnormal white blood cells . These abnormal cells crowd out healthy blood cells, making it difficult for the body to fight infections, carry oxygen, or control bleeding. Main Types of Leukemia These abnormal cells crowd out healthy blood cells,
Develops more slowly and involves more mature, though still abnormal, cells; patients may remain asymptomatic for years. By Cell Type
easy bleeding or bruising (e.g., nosebleeds or tiny red spots called petechiae) bone pain or tenderness Causes and Risk Factors Leukemia - StatPearls - NCBI Bookshelf
Affects the myeloid cells, which normally develop into red blood cells, other white blood cells, and platelets. Common Symptoms Symptoms vary by type but often include: persistent fatigue and weakness frequent or severe infections unexplained weight loss swollen lymph nodes or an enlarged liver/spleen