Extranodal natural killer/T-cell lymphoma (ENKTCL), nasal type, is a rare subtype of non-Hodgkin lymphoma (NHL) with relatively high incidence in China. Radiotherapy alone for stage IE/IIE diseases has good response rate but with high relapse rates, ranging from 20-50%. The combination of chemotherapy and radiotherapy improved the long-term survival for patients with stage IE/IIE diseases. But the optimal treatment schedule has not been established. This study is designed with two cycles GELAD chemotherapy, followed by 50-56Gy radiotherapy, and completed with additional two cycles GELAD chemotherapy. The efficacy and safety of this sandwiched chemoradiotherapy in the treatment of stage IE/IIE ENKTCL will be measured.