为了探讨癌症患者长期生存的可能性，从美国癌症研究现状出发，简述了在癌症防诊治技术的支持下，癌症患者总体5年生存率自20世纪70年代起有所改善，并于近几年显著提高.这表明随着癌症研究和医疗方法的进步，癌症有望脱离高死亡率疾病范畴，癌症患者有望长期生存.
To explore the possibility of long-term survival of cancer patients, this paper describes a phenomenon based on the current status of cancer research in the United States. This phenomenon is that the 5-year survival rate of all cancers combined has been effectively improved since the 1970s with the development of various methods of prevention, diagnosis, and treatment. This implies that cancer is no longer a highly-lethal disease due to the progress of cancer research and medical technologies in the future. It may be possible that cancer patients could survive for a long time.
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