Half were given immediate radiotherapy, which until now has been standard treatment to prevent the return of disease. The rest were monitored and only given radiotherapy if there were signs that disease had returned.
其中一半患者接受了即时放射治疗，这是迄今为止预防疾病复发的标准治疗方法。对其余患者进行监测，只有在疾病出现复发迹象时下才给予放射治疗。