Kamiya Y, et al. - In patients undergoing breast cancer surgery, authors evaluated the ability of pectoral nerve (PECS) block to decrease postoperative pain and anaesthesia and analgesia requirements and to improve postoperative quality of recovery (QoR). Findings revealed that PECS block combined with general anaesthesia reduced the requirement for propofol but not that for remifentanil among these patients, due to the inability of the PECS block to reach the internal mammary area. In addition, PECS block resulted in improvement in postoperative pain but not in the postoperative QoR-40 score due to the factors that could not be measured by analgesia immediately after surgery, such as rebound pain.