The results confirmed that elevated preoperative PRL (OR = 1.002, 95% CI: 1.001–1.004, p = 0.004), greater preoperative elevation of the diaphragma sellae (OR = 1.202, 95% CI: 1.063–1.354, p = 0.003), and early postoperative hyponatremia (OR = 6.647, 95% CI: 1.693–26.098, p = 0.007) remained significant predictors in this subgroup (Table 3). This evidence concerns the gene PRL and Hyponatremia.