NATIONAL CANCER INSTITUTE
chronic eosinophilic leukemia
(KRAH-nik EE-oh-SIH-noh-FIH-lik loo-KEE-mee-uh)
A disease in which too many eosinophils (a type of white blood cell) are found in the bone marrow, blood, and other tissues. Chronic eosinophilic leukemia may stay the same for many years, or it may progress quickly to acute leukemia.