Ui T, et al. - Authors assessed the relationship of high estimated glomerular filtration rates (eGFRs) with surgical outcomes in patients who underwent surgery for gastrointestinal malignancies. As per the findings, in patients who underwent surgery for gastrointestinal malignancies, high and low eGFRs were related to more adverse surgical outcomes. Experts noted that eGFR related to the lowest postoperative risk was approximately at the median eGFR of a given population. For other surgical outcomes including return to the operating room and postoperative pneumonia, similar associations were shown.