1naresh
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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%)