IGF1 and malignant colon neoplasm: During a totally laparoscopic surgery for colon cancer, we used IGFI to evaluate the bowel perfusion only under laparoscopy, and the mean operation time is 125.8 ± 34.9 min, which is significantly shorter than the control group, and we attributed this difference to the fast and accurate judgment of bowel perfusion and the simplicity of this procedure.