低位直肠癌肿瘤远端肠管的切除范围与保肛手术的成败密切相关,究竟切除多少肠管较为适宜,目前尚存不同意见。作者针对这一问题对83例直肠癌标本进行了系统的病理学观察,为临床外科选择手术术式、确定切缘位置,提供病理组织学依据。一、临床资料:本组资料包括直肠癌83例,男40例,女43例。年龄24—74岁, The range of resection of distal rectal cancer with low rectal cancer is closely related to the success or failure of sphincter preserving operation. It is more appropriate to remove a large number of intestine, and there are still different opinions. The authors carried out a systematic pathological observation of 83 cases of rectal cancer specimens for this issue, selecting surgical procedures for clinical surgery, determining the margin position, and providing histopathological basis. First, clinical data: This group of data includes 83 cases of rectal cancer, 40 males and 43 females. 24-74 years old,