急性骨髄性の治療に関して全国より登録された3つのデータベースを解析した。治療関連骨髄性腫瘍は急性骨髄性白血病の5.1~8.1%に認められた。発症年齢は、治療関連骨髄性腫瘍でやや高い傾向が認められ、男女差はなかった。染色体核型は、予後不良を示す者が多い。5年生存率は関連骨髄性腫瘍が有意に悪く、20%以下であるが、症例を選択し有効な治療が行われれば改善する可能性が示唆された。
We analyzed 3 databases of acute myeloid leukemia (AML) that was registered from all of the country. Frequency of therapy-related myeloid neoplasms(t-MN) was between 5.1 and 8.1%. Patients with t-MN were older than patients with de novo AML, and sex difference was not observed. Adverse cytogenetics were observed most frequently in patients with t-MN. Five years survival rate in patients with t-MN was significantly inferior to patients with de novo AML and was less than 20%. Survival probability in patients with t-MN might improve if they could receive intensive treatment.