It is concluded that there is a correlation between the concentration of trace elements and Cu/Zn ratio and the degree of malignancy in patients with malignant tumors.

• 作者认为肿瘤的发展程度与微量元素含量变化有关，铜/锌比值对恶性肿瘤的疗效和预后估计有一定的参考价值。