ABSTRACT
Colon cancer is a commonly malignant tumor with high morbidity and mortality in China, which seriously threatens human health and lives. Surgery plays a key role in the treatment of colorectal cancer so far. The sigmoid colon is the predilection site of colon cancer. Laparoscopic surgery has been gradually applied in radical operation of sigmoid colon cancer. 4K laparoscopy belongs to a kind of high-imaging technology, of which the information volume is more than 4 times that of conventional high-definition televisions. It can improve the operator's sense of control on the surgical field of view. Combined with team practical experience, the author introduces and interprets the excision extent and operative procedures in radical resection of mid-distal sigmoid colon cancer from the perspective of the 4K laparoscopy.