A silicone disc for liver retraction in laparoscopic gastrectomy reduces the postoperative increase in the liver enzyme level

To compare changes in liver enzyme levels on postoperative day 1 between patients with and without silicone disc (SD) use during liver retraction in laparoscopic gastrectomy for gastric cancer and laparoscopic gastric mobilization for esophageal cancer. This prospective randomized controlled phase II trial was conducted between June 30, 2020, and November 30, 2022, to investigate the benefits of using an SD with a Nathanson liver retractor (NLR) compared with those using an NLR in laparoscopic gastrectomy and gastric mobilization. The primary endpoint was the change in transaminase level on postoperative day 1. A total of 86 patients received randomized assignments and were included in the analysis, with 44 assigned to the SD (–) group and 42 to the SD (+) group. On postoperative day 1, the SD (+) group showed a significantly lower increase in the aspartate aminotransferase levels than the SD (–) group (SD [+], 94.4