Summary of 203 meningioma patients who underwent preoperative embolization
| Group 1 | Group 2 | ||
|---|---|---|---|
| (N = 75) | (N = 128) | ||
| Interval between embolization and surgery (mean) | 1–7 days (2.1 days) | 8–26 days (9.9 days) | |
| Total blood loss (mL) | 897 | 987 | NS |
| During removal of tumor (mL) | 534 | 424 | NS |
| Blood transfusion (U) | 1.0–9.0 | 1.0–6.0 | |
| Mean (U) | 2.9 | 2.1 | NS |
| Tumor consistency at surgery | |||
| Hard | 50 | 31 | }P < .01 |
| Moderately hard | 20 | 75 | |
| Soft | 5 | 22 | |
| Simpson grade | 2.60 | 1.91 | P < .01 |
Note:— NS indicates not significant