The study of changes in neutrophil function and physical stress during the perioperative period of endoscopic operation - changes in serum opsonic activity during the perioperative period of endoscopic operation

SOA to stimulate neutrophil ROS production was increased during the perioperative period of ESD for gastric cancer. SOA was the highest on the next day of ESD and continued to increase even at 4 days after ESD. During the perioperative period of ESD for early-stage colorectal cancer, no SOA changes were found on the day after ESD. SOA increased 4 days after ESD when measured by LgCL, but not in other cases.