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Large granular lymphocytic (LGL) leukemia is a rare blood cancer affecting white blood cells - specifically T cells or natural killer cells - that develop in the bone marrow. These cells become abnormally large, contain granules, and multiply excessively. When this happens, they can crowd out healthy blood cells and fail to Show Full Answer

Large granular lymphocytic (LGL) leukemia is a rare blood cancer affecting white blood cells - specifically T cells or natural killer cells - that develop in the bone marrow. These cells become abnormally large, contain granules, and multiply excessively. When this happens, they can crowd out healthy blood cells and fail to properly fight infections.

The condition affects men and women equally and is typically diagnosed between ages 45-75, with an average diagnosis age of 60. It's considered very rare, occurring in about 0.2 cases per million people annually. There are two main types: T-cell LGL (T-LGL) and natural killer LGL (NK-LGL). T-LGL is more common, representing about 85% of cases. Both types share similar symptoms and treatment approaches. Many people with LGL leukemia require treatment eventually, though some cases may be monitored with a "wait-and-watch" approach if the disease is slow-growing and asymptomatic.

Treatment typically involves medications that modify immune system function, such as methotrexate, cyclophosphamide, or cyclosporine. Your doctor will monitor your condition through blood tests, bone marrow samples, and other specialized testing to determine the best treatment approach.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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