Lesion characteristics and arterial anatomy of meningiomas
| Characteristics/Anatomy | |
|---|---|
| Total | n = 20 |
| Mean age (yr) | 56 ± 14 |
| Male sex (%) | 9 (45%) |
| Location (%) | |
| Sphenoid ridge (lateral type) | 4 (20%) |
| Sphenoid ridge (medial type) | 9 (45%) |
| Sphenoid ridge (diffuse type) | 3 (15%) |
| Olfactory groove | 4 (20%) |
| Mean maximum diameter (mm) | 43 ± 13 |
| Histopathologic diagnosis (%) | |
| Meningothelial meningioma | 8 (40%) |
| Transitional meningioma | 8 (40%) |
| Other WHO grade I meningioma | 3 (15%) |
| WHO grade II meningioma | 1 (5%) |
| Feeders from OphA (%) | 19 (95%) |
| RMA-OC | 7 (35%) |
| RMA-LSOF | 13 (65%) |
| RMA-MSOF | 2 (10%) |
| EtA | 6 (30%) |
| TOB | 4 (20%) |
| Feeders from ICA (%) | 15 (75%) |
| ILT | 13 (65%) |
| MHT | 9 (45%) |
| Feeders from ECA (%) | 15 (75%) |
| MMA | 12 (60%) |
| Accessory meningeal artery | 7 (35%) |
| Artery of the foramen rotundum | 6 (30%) |
| Artery of the SOF | 3 (15%) |
| Anastomosis of each feeder (%) | 15 (75%) |
| OphA-OphA | 4 (20%) |
| OphA-ICA | 5 (25%) |
| OphA-ECA | 2 (10%) |
| OphA-ICA-ECA | 2 (10%) |
| ICA-ICA | 1 (5%) |
| ICA-ECA | 1 (5%) |