Two cases of acute leukemia with a history of long-term irradiation

This paper presents two patients who developed acute leukemia due to long-term exposure to medical irradiation. One male patient aged 60 had engaged in medical practice as a radiographer for 40 years; another female patient aged 29 had taken care of her daughter in a x-ray room without putting on a protector when she underwent 40 x-ray examinations for 4 years. (Namekawa, K.)