In refractory patients,complete remission(CR)was achieved in 19 cases(44.2%),whereas in the early and late relapsed patients were 13.2%(5/38)and 73.9%(34/46),respectively.

• 难治性患者、早期复发及晚期复发患者的完全缓解(CR)率分别为44.；2%25(19/43例)、13