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磁县是我国食管癌的高发区，国家句五”食管瘤综合防治研究课题现场设在这里。自lop年夏季开始进行食管癌的普查，对查出来的食管癌癌前病变患者经过3年多时间的二级预防研究，于lop年夏季又进行复查，复查结果令人满意，取得了较好的预防效果，报告如下。一、研究内容lpeQ年夏
Cixian County is a high-risk area of esophageal cancer in China. The State Syndrome 5 "study site for the comprehensive prevention and treatment of esophageal tumors is located here. Since the summer of lop, a survey of esophageal cancer has started, and patients with precancerous lesions of esophageal cancer have been detected for over 3 years. The secondary prevention study of time was re-examined during the summer of the lop, and the results of the review were satisfactory. The results of the report were as follows.