Stages of Hairy Cell Leukemia

There is no classification system for hairy cell leukemia. Patients were grouped depending on whether or not they have received treatment for leukemia.
Hairy cell leukemia without treatment
There is no treatment administered to treat leukemia, but may have been given some treatment for infections or other side effects of leukemia.
Progressive hairy cell leukemia
It has carried out an operation to remove the spleen (splenectomy) or has administered a systemic therapy (treatment which uses substances that travel through the bloodstream to reach certain cells in the body and change) but the leukemia is worse.
Refractory hairy cell leukemia
The leukemia has been treated but no longer responds to treatment.