Abstract
Therapy-related leukemia is an increasing concern in hematology. One of these substances that showed to increase the incidence of leukemia is radioactive iodine (RAI). We report here a case of radioactive iodine-induced chronic myeloid leukemia (CML) in a patient with Graves' disease, although most cases in the literature were for thyroid cancer. Also, our patient received a very low dose, which is unique compared to previous case reports in the literature.