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大肠癌是我国常见的恶性肿瘤之一，发病率逐年上升，而且发病年龄呈下降趋势。同老年大肠癌相比，青年大肠癌以其恶性度高、预后差等特点引起了医学界的重视，但目前对青年大肠癌的研究多局限于临床分析和病理形态学观察，本实验采用免疫组织化学SP方法对63例青、老年大肠癌C－
Colorectal cancer is one of the common malignancies in China. The incidence rate has been increasing year by year, and the age of onset has been decreasing. Compared with colorectal cancer in the elderly, the colorectal cancer of the young people has attracted the attention of the medical community because of its high degree of malignancy and poor prognosis. However, currently the study of young colorectal cancer is mostly limited to clinical analysis and pathological observation. This experiment uses immunity. Histochemical SP method for 63 cases of colorectal cancer