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目的：探讨结、直肠癌组织中的微量元素变化。方法；应用分析电镜对37例结、直肠癌，移行粘膜和正常粘膜组织中元素进行研究。结果；在结、直肠癌中磷元素和钾元素相对含量显著高于正常粘膜（P＜0．05）。结论：上述结果提示在结、直肠癌中除微量元素钙、铜、锌和锰含量降低以外，元素磷和钾含量增加。
Objective: To explore the changes of trace elements in the tissues of colorectal cancer and rectal cancer. Methods: The components of 37 cases of colorectal cancer, transitional mucosa and normal mucosa were studied by SEM. Results: The relative contents of phosphorus and potassium in the colorectal cancer and rectal cancer were significantly higher than those in normal mucosa (P<0.05). Conclusion: The above results suggest that in addition to the decrease of trace elements calcium, copper, zinc and manganese in the colorectal cancer, the content of elemental phosphorus and potassium increases.