Lymphocytopenia (also called lymphopenia) means a lower‑than‑normal number of lymphocytes in the blood. Lymphocytes are white blood cells that power your ...

Physiologic lymphocytopenia is a normal, transient drop in circulating lymphocyte counts that occurs in healthy individuals under non‑pathologic conditions. ...

Production‑dominant lymphocytopenia occurs when the bone marrow cannot produce enough lymphocytes. Lymphocytes are white blood cells vital for fighting ...

Dilutional lymphocytopenia is a specific form of lymphopenia (also called lymphocytopenia) in which the absolute number of lymphocytes in the blood is lowered ...

Redistribution‑dominant lymphocytopenia is a condition in which the number of lymphocytes (a key type of white blood cell) in the bloodstream falls because ...

Relative lymphocytopenia is a blood‐test finding in which lymphocytes—the white blood cells critical for fighting infections—make up a lower percentage of your ...

Lymphocytosis means a high number of lymphocytes (a type of white blood cell) in the blood. Many short‑lived infections can raise lymphocytes for a few days or ...

Reactive (benign) lymphocytosis is a condition in which your body has an unusually high number of lymphocytes—white blood cells tasked with fighting ...

Lymphocytopenia means you have lower than normal lymphocytes in your blood. Lymphocytes are a type of white blood cell (mainly T cells, B cells, and NK cells) ...

Severe low lymphocytes—also known as severe lymphocytopenia—is a condition in which the lymphocyte count in the blood falls well below the normal range ...

Lymphocytes are a type of white blood cell essential for fighting infections and regulating the immune response. When the absolute lymphocyte count (ALC) falls ...

Mild lymphocytopenia, sometimes called mild lymphopenia, refers to a slight decrease in the number of lymphocytes in the bloodstream. Lymphocytes are a type of ...

Low lymphocytes, or lymphopenia, refers to an abnormally low number of lymphocytes—a type of white blood cell crucial for immune defense—in the bloodstream. ...

Natural killer (NK) cells are a type of white blood cell critical to your body’s first line of defense against infected or cancerous cells. They act without ...

Lymphocytosis means there are more lymphocytes than usual in the blood. Lymphocytes are a type of white blood cell. They include T cells, B cells, and NK ...

Mantle cell lymphocytosis refers to an abnormal increase in malignant B-lymphocytes originating from the “mantle zone” of lymph nodes—a pattern characteristic ...

Monoclonal B‑cell lymphocytosis (MBL) is a blood condition in which a small, clonal population of B‑lymphocytes—white blood cells that normally help fight ...

B‑cell lymphocytosis (also called monoclonal B‑cell lymphocytosis, or MBL) means your body has too many identical B‑cells in the blood. These cells come from ...

Chronic lymphocytosis is a condition where your blood contains too many lymphocytes— a type of white blood cell—over a long period. Normally, lymphocytes make ...

Acute or transient lymphocytosis refers to a temporary increase in the absolute lymphocyte count (ALC) in peripheral blood above the normal range (usually ...