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肠肿瘤新分类肠肿瘤的组织学分类第1版发表于1976年。随着新认识的出现以及经验的积累，对第1版的分类进行了修订，1989年公布了新的第2版肠肿瘤组织”学分类。观介绍如下：附：WHO肠肿瘤组织学类型小肠1上皮性肿瘤1．1良性1．1．1腺瘤1．1．1．1管状1．1．1．2绒毛状1．1．1．
New Classification of Intestinal Tumors The histological classification of intestinal tumors was published in 1976. With the appearance of new knowledge and the accumulation of experience, the classification of the first edition has been revised. In 1989, a new second edition of the “Intestinal Tumor Tissue” classification was published. The concept is described as follows: Appendix: WHO Intestinal neoplasm histological type Small intestine 1 epithelial tumor 1.1 benign 1.1.1 adenoma 1.1.1.1 tubular 1.1.1.2 villous 1.1.1.