食管癌手术切除长度现无统一标准，多数医师以切除癌旁5cm为标准，但断端残癌比例较高。有研究表明食管癌多中心起源，主张扩大切除范围。1992年起，我们应用FACS420流式细胞仪对32例食管癌癌灶和癌旁组织进行DNA含量检测，观察DNA异倍体细胞分布规律。报告如下。临床资料研究 There is no uniform standard for the length of surgical resection of esophageal cancer. Most physicians use the standard 5 cm of resection of cancer as the standard, but the proportion of stump cancer is higher. Studies have shown that the origin of esophageal cancer is polycentric, and it is advocated to expand the scope of resection. Since 1992, we used the FACS420 flow cytometer to detect DNA content in 32 cases of esophageal cancer foci and paracancerous tissues, and observed the distribution of DNA aneuploid cells. The report is as follows. Clinical data research