limfocitás

Lymphocytosis refers to an increase in the number of lymphocytes in the blood. Lymphocytes are a type of white blood cell that play a crucial role in the immune system, helping the body fight off infections and diseases. A higher-than-normal lymphocyte count can be an indicator of various conditions, some benign and others more serious.

Common causes of lymphocytosis include viral infections such as infectious mononucleosis (mono), cytomegalovirus (CMV), and influenza. Bacterial infections, particularly pertussis (whooping cough) and tuberculosis, can also lead to elevated lymphocyte levels. Certain chronic inflammatory conditions and autoimmune disorders might also manifest with lymphocytosis.

In some instances, lymphocytosis can be a sign of a blood cancer, such as leukemia or lymphoma. These conditions involve the abnormal proliferation of lymphocytes. It is important to note that a diagnosis of lymphocytosis requires further investigation by a medical professional to determine the underlying cause and appropriate treatment. The specific type of lymphocyte that is increased can also provide clues to the etiology. A doctor will typically order additional blood tests and may consider imaging or other diagnostic procedures to reach a definitive diagnosis.