Table 1. Patient clinical data.
| Patients | Age (years) | Gender | Location | Infiltrated tissues (on MRI and/or CT) | Infiltrated tissues (pathological examination) | Recurrence | WHO grade | Pathology subtype | MIB-1 | Mitoses in 10 fields (40×) |
| P1 | 68 | F | SB (spheno-orbital) | bone | bone and brain (invasion) | no | II | M | 3<M<5% | |
| P2 | 44 | F | convexity (P) | bone | bone | no | I | 0 | ||
| P3 | 61 | F | SB (petrous bone) | bone | nd | no | I | M | <1% | 0 |
| P4 | 36 | F | SB (spheno-orbital) | bone | bone | no | I | M | 0 | |
| P5 | 49 | F | convexity (P) | bone | bone | no | I | M | 0 | |
| P6 | 66 | F | convexity (T) | bone | bone | no | I | M | <3% | 0 |
| P7 | 49 | F | convexity (F) | bone | bone | no | I | S | 0 | |
| P8 | 49 | F | SB (spheno-orbital) | bone | bone | no | I | T | <1% | 0 |
| P9 | 54 | F | SB (spheno-orbital) | bone | bone | no | I | M | 0 | |
| P10 | 68 | F | convexity (P) | bone | bone | no | II* | <3% | 4<M<20 * | |
| P11 | 50 | F | SB (spheno-orbital) | bone, cavernous sinus | bone | no | I | M | <1% | 0 |
| P12 | 55 | M | parasagittal | bone, sup longitudinal sinus | bone | no | I | F | 0 | |
| P13 | 54 | F | parasagittal | bone, sup longitudinal sinus | veinous lumen | no | I | M | 0 | |
| P14 | 68 | F | parasagittal | bone, sup longitudinal sinus | Bone+veinous lumen | no | I | M | <3% | 0 |
| P15 | 68 | F | SB (cavernous sinus) | bone, cavernous sinus | bone | yes | I | M | 0 | |
| P16 | 55 | F | SB (spheno-orbital) | bone, cavernous sinus | bone | yes | I | T | 0 | |
| P17 | 55 | F | SB (cavernous sinus) | bone, cavernous sinus | bone | yes | I | M | 0 | |
| P18 | 64 | F | SB (spheno-orbital) | bone, cavernous sinus | bone | no | I | M | 0 | |
| P19 | 52 | M | SB (cavernous sinus) | bone, cavernous sinus | nd | yes | I | M | <1 | |
| P20 | 66 | F | SB (spheno-orbital) | bone, cavernous sinus | bone | yes | I | F | 0 | |
| P21 | 45 | F | SB (cavernous sinus) | bone, cavernous sinus | nd | yes | I | M | 0 | |
| P22 | 41 | F | SB (spheno-orbital) | bone, cavernous sinus | yes | yes | I | M | 0 | |
| P23 | 61 | F | SB (spheno-orbital) | bone, cavernous sinus | bone | no | I | M | 0 | |
| P24 | 64 | F | SB (clivus) | brain | brain (invasion) | yes | II | M | ||
| P25 | 52 | M | SB (cavernous sinus) | cavernous sinus, no bone | Nd | no | I | T | 3% | 0 |
| P26 | 45 | F | SB (cavernous sinus) | cavernous sinus, no bone | Nd | yes | I | M | 0 | |
| P27 | 67 | M | SB (cavernous sinus) | cavernous sinus, no bone | Nd | no | I | M | 0 | |
| P28 | 45 | F | SB (clinoid) | cavernous sinus, no bone | Nd | no | I | M | 3% | 0 |
| P29 | 79 | F | parasagittal | sup longitudinal sinus | veinous lumen | no | I | M | 0 | |
| P30 | 71 | F | convexity (PF) | vein (lateral sinus) | Nd | no | I | T | 0 | |
| P31 | 55 | F | parasagittal | vein (sup longitudinal sinus) | inside the veinous lumen | no | I | M | 0 | |
| P32 | 55 | F | SB (cavernous sinus) | cavernous sinus, no bone | Nd | no | I | M | 0 | |
| P33 | 69 | F | SB (cavernous sinus) | cavernous sinus, no bone | Nd | no | I | M | 0 | |
| P34 | 73 | F | convexity (PF) | lateral sinus | Nd | no | I | F | 0 | |
| P35 | 43 | F | parasagittal | no | no | no | I | T | <3% | 0 |
| P36 | 46 | F | convexity (P) | no | No | no | I | M | <1% | 0 |
| P37 | 62 | M | SB (frontal) | no | No | no | I | M | <1% | 1 |
| P38 | 71 | F | convexity (T) | no | no | no | I | M | <1% | 0 |
| P39 | 56 | F | SB (temporal) | no | no | no | I | M | <1% | 0 |
| P40 | 56 | F | SB (frontal) | no | no | no | I | F | <1% | 0 |
| P41 | 56 | M | convexity (P) | no | no | no | II* | <5% | 4<M<20 | |
| P42 | 56 | F | convexity (T) | no | no | no | I | M | 3<M<5% | |
| P43 | 74 | F | SB (frontal) | no | no | yes | I | M | 0 | |
| P44 | 47 | F | SB (frontal) | no | no | no | I | T | 0 | |
| P45 | 62 | F | SB (temporal base) | no | no | no | I | M | <3% | |
| P46 | 55 | M | convexity (fontal) | no | no | no | I | M | 1% | 0 |
| P47 | 32 | F | tentorium | no | no | no | I | T | <3% | 0 |
| P48 | 56 | F | SB (F) | no | no | no | I | M | 0 | |
| P49 | 65 | F | SB (T) | no | no | no | II* | M | 2<M<5% | 4<M<20 |
| P50 | 58 | F | convexity (F) | no | no | no | II* | F | <3% | 4<M<20 |
| P51 | 47 | F | convexity (F) | no | no | no | II* | 2<M<5% | 4 | |
| P52 | 52 | F | convexity (P) | no | no | no | I | T | <3% | 0 |
| P53 | 69 | M | convexity (PF) | no | no | no | I | F | 0 | |
| P54 | 32 | M | convexity (F) | no | no | no | I | F | <1% | 0 |
| P55 | 57 | M | convexity (F) | no | no | no | II* | <7% | 4<M<20 | |
| P56 | 59 | F | SB | no | no | no | I | T | 0 | |
| P57 | 76 | F | convexity (P) | no | no | no | II* | M | 2<M<5% | <4 |
| P58 | 70 | F | SB (temporal base) | no | no | no | I | P | 0 | |
| P59 | 47 | M | convexity (F) | no | no | no | I | Mi | 0 | |
| P60 | 54 | M | SB (PF) | no | no | no | I | M | 0 | |
| P61 | 52 | F | convexity (F) | no | no | no | I | M | <1% | 0 |
| P62 | 35 | M | convexity (T) | no | no | no | I | M | 0 | |
| P63 | 67 | F | SB (frontal) | no | no | no | I | M | <1% | 0 |
| P64 | 66 | F | ventricular | no | no | no | II | M | 20% | <4 |
Location (F = frontal, T = temporal, P = parietal, PF = posterior fossa, SB = skull base); infiltrated tissues (nd = no identification possible on pathological examination as the tumor removal concerned its extension outside the invaded sinus; hence infiltration was stated on MRI or CT data only; sup longitudinal sinus = superior longitudinal sinus); WHO grade (II* = grade II according to the number of mitoses per field (Perry1999)11; pathology subtype (M = meningothelial, Mi = microcystic, T = transitional, P = psammomatous, S = secretory).