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恶性肿瘤已是人类各种死亡原因中的第一位,其发病率也迅速增加。国内外的基础和临床研究表明:大多数恶性肿瘤在发病早期就可出现转移,而早期多无明显症状[1]。医学实践告诉我们,转移性或复发性肿瘤是不可治愈的,但可以改善患者的生活质量和延长生存时间,寻找新的疗法并使晚期恶
Malignant tumors are the first of various causes of human death and their incidence is rapidly increasing. The basic and clinical studies both at home and abroad show that most malignant tumors can metastasize early in the disease, but there are no obvious symptoms in the early stage [1]. Medical practice tells us that metastatic or recurrent tumors are incurable, but can improve the quality of life of patients and prolong survival, find new therapies and make late-evil