Chronic Lymphocytic Leukemia

Chronic lymphocytic leukemia (CLL) is a mature B-cell malignancy in which functionally impaired monoclonal lymphocytes progressively accumulate in blood and commonly involve bone marrow, lymph nodes, spleen, and liver. The accumulating clone can displace normal marrow production and weaken immune function. This links the disease mechanism to anemia, thrombocytopenia, recurrent infection, lymphadenopathy, and splenomegaly. CLL and small lymphocytic lymphoma are biologically the same disease, but the classification depends on where the clonal cells are demonstrated and on the circulating B-lymphocyte count. Many people are asymptomatic when CLL is found on a complete blood count. Others present with fatigue, infection, painless lymph-node enlargement, splenomegaly, hepatomegaly, or autoimmune hemolytic anemia. The course is variable, so the presence of leukemia does not automatically mean that treatment must begin. The key mental model is accumulation plus immune dysfunction: the count may rise slowly without causing harm, while cytopenias, symptomatic tissue enlargement, infection, autoimmune cytopenia, or constitutional symptoms may show clinically important disease. The first nursing priority is therefore the patient's current stability rather than the lymphocyte count alone. Assess airway, breathing, circulation, temperature, bleeding,...