Fig. 1　Changes in transaminases in the perioperative period. (a) AST increased at 1 day and 3 days and improved at 1 week postoperatively. (b) The same trend is true for ALT, which increased at 1 day and 3 days and 1 week postoperatively. (*P < 0.01 **P < 0.001, Wilcoxon signed-rank test, compared to preoperative values) AST, aspartate aminotransferase; ALT, alanine aminotransferase.