ALB and diabetes mellitus: There were not enough studies to evaluate the influence of age (10, 25, 26, 28), tumor pathological type (18, 29), and experience of the surgeon (18), combined with other intracranial diseases (23, 30), albumin level (17), chronic respiratory disease (16), and diabetes mellitus (10).We can only conduct qualitative analysis based on the literature (detailed information shown in Table 3).There was no significant statistical difference in the impact of gender on postoperative CSF leakage.