Characteristics of patients with postoperative tumor recurrence in all patients
| Total n=39 n (%) | Preoperative tumor embolization | Univariate | ||
| Yes n=18 n (%) | No n=21 n (%) | P value | ||
| Age, mean±SD (years) | 63.9±12.7 | 64.4±8.3 | 63.4±8.3 | 0.877 |
| Sex, female | 15 (38.5) | 5 (27.8) | 10 (47.6) | 0.204 |
| WHO grade | 0.888 | |||
| I | 30 (76.9) | 14 (77.8) | 16 (76.2) | |
| II | 6 (15.4) | 3 (16.7) | 3 (14.3) | |
| III | 3 (7.7) | 1 (5.6) | 2 (9.5) | |
| Asymptomatic | 12 (30.7) | 4 (22.2) | 8 (38.1) | 0.284 |
| Tumor location | ||||
| Convexity | 4 (10.3) | 2 (11.1) | 2 (9.5) | 0.871 |
| Skull base | 24 (61.5) | 10 (55.6) | 14 (66.7) | 0.477 |
| Infratentorial | 7 (18.0) | 1 (5.6) | 6 (28.6) | 0.06 |
| Other location | 10 (25.6) | 6 (33.3) | 4 (19.1) | 0.308 |
| Maximum diameter of tumor, mean±SD (mm) | 46.3±13.8 | 53.8±13.2 | 39.8±14.3 | 0.0063 |
| MRI T2 high intensity | 16 (41.0) | 5 (27.8) | 11 (52.4) | 0.119 |
| Calcification | 2 (5.1) | 0 | 2 (9.5) | 0.179 |
| Peritumoral edema | 20 (51.3) | 13 (72.2) | 7 (33.3) | 0.015 |
| Cyst formation | 3 (7.7) | 1 (5.6) | 2 (9.5) | 0.643 |
| MIB-1, mean±SD (%) | 7.7±9.4 | 7.7±2.2 | 7.7±2.1 | 0.650 |
| Simpson grade | 0.718 | |||
| I | 4 (10.3) | 1 (5.6) | 3 (14.3) | |
| II | 3 (7.7) | 1 (5.6) | 2 (9.5) | |
| III | 5 (12.8) | 3 (16.7) | 2 (9.5) | |
| IV | 27 (69.2) | 13 (72.2) | 14 (66.7) | |
| Surgery-related complications | 1 (2,6) | 1 (5.6) | 0 | 0.274 |
| Postoperative stereotactic radiotherapy | 16 (41.0) | 7 (38.9) | 9 (42.9) | 0.802 |
| Retreatment at recurrence | 21 (53.4) | 9 (50) | 12 (57.1) | 0.656 |
| mRS 0–2 at last follow-up | 36 (92.3) | 17 (94.4) | 19 (90.5) | 0.643 |
mRS, modified Rankin Scale; WHO, World Health Organization.