Table 1.
Baseline characteristics of Spheno-orbital meningioma patients
| LUMC cohort (n = 19) | |
|---|---|
| Gender, female | 18 (95%) |
| Age at surgery, years | 47.0 (45.0–50.0) |
| Time between diagnosis and surgery in months | 7.2 (3.4–8.9) |
| Hyperostosis diameter (mm) | 31.0 (24.0–35.0) |
| Soft tissue diameter (mm) | 11.0 (8.0–18.0) |
| Simpson grade | |
| Grade I | 6 (32%) |
| Grade II | 9 (47%) |
| Grade III | 0 (0%) |
| Grade IV | 4 (21%) |
| Extent of resection | |
| Full resection | 15 (79%) |
| Subtotal resection | 4 (21%) |
| WHO grade I | 19 (100%) |
| WHO subtypes | |
| Meningothelial | 15 (79%) |
| Transitional | 3 (16%) |
| Secretory | 1 (5%) |
| Number of tumors | |
| 1 | 13 (69%) |
| 2 | 3 (16%) |
| 3 | 0 (0%) |
| 4 | 1 (5%) |
| 5 | 2 (11%) |
| Postoperative proton radiotherapy | 2 (11%) |
| Postoperative photon radiotherapy | 1 (5%) |
| Reoperation | 2 (11%) |
| Follow-up length in years | 2.4 (1.3–3.3) |
Continuous outcomes are described as median value and interquartile range. Dichotomous outcomes are described as number and percentages. Percentages might not add up to 100% due to rounding
Extent of resection was determined intraoperatively and on postoperative CT and MRI scan. A subtotal resection was defined as residual meningioma tissue or hyperostosis