Table 2.

Clinicopathological characteristics of anterior clinoidal meningioma patients.

Characteristics	All patients (n = 131)	Type I ACMs (n = 55)	Type IIa ACMs (n = 26)	Type IIb ACMs (n = 12)	Type III ACMs (n = 22)	Type IV ACMs (n = 16)
Age (years)
Range	27–76	33–73	27–76	27–73	33–60	38–64
Mean ± SD	53.66 ± 10.82	55.95 ± 9.68	57.31 ± 12.77	55.83 ± 12.04	46.77 ± 8.42	47.75 ± 6.78
Gender
Male	45 (34.4%)	22 (40.0%)	8 (30.8%)	6 (50.0%)	8 (36.4%)	1 (6.3%)
Female	86 (65.6%)	33 (60.0%)	18 (69.2%)	6 (50.0%)	14 (63.6%)	15 (93.7%)
Presenting symptoms
Vision decrease	57 (43.5%)	25 (45.5%)	1 (3.8%)	3 (25.0%)	16 (72.7%)	12 (75.0%)
Headache	45 (34.4%)	12 (21.8%)	11 (42.3%)	4 (33.3%)	3 (13.7%)	15 (93.7%)
Dizziness	32 (24.4%)	11 (20.0%)	8 (30.8%)	4 (33.3%)	3 (13.7%)	6 (37.5%)
Incidental finding	11 (8.4%)	5 (9.1%)	3 (11.5%)	1 (8.3%)	2 (9.1%)	0 (0%)
Seizure	7 (5.3%)	0 (0%)	3 (11.5%)	3 (25.0%)	0 (0%)	1 (6.2%)
Limb weakness	6 (4.6%)	1 (1.8%)	2 (7.7%)	0 (0%)	0 (0%)	3 (18.8%)
Diplopia	4 (3.1%)	0 (0%)	0 (0%)	2 (16.7%)	0 (0%)	2 (12.5%)
Ptosis	3 (2.3%)	0 (0%)	0 (0%)	1 (8.3%)	0 (0%)	2 (12.5%)
Tumor diameter
≥3 cm	108 (82.4%)	40 (72.7%)	23 (88.5%)	12 (100%)	17 (77.3%)	16 (100%)
<3 cm	23 (17.6%)	15 (27.3%)	3 (11.5%)	0 (0%)	5 (22.7%)	0 (0%)
Resection degree (simpson)
Grade 1–2	88 (67.2%)	47 (85.5%)	24 (92.3%)	0 (0%)	12 (54.5%)	5 (31.3%)
Grade 3–4	43 (32.8%)	8 (14.5%)	2 (7.7%)	12 (100%)	10 (45.5%)	11 (68.7%)
Tumor grades
WHO grade I	120 (91.6%)	51 (92.7%)	25 (96.2%)	11 (91.7%)	20 (90.9%)	13 (81.3%)
WHO grade II	10 (7.6%)	4 (7.3%)	1 (3.8%)	1 (8.3%)	2 (9.1%)	2 (12.5%)
WHO grade III	1 (0.8%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	1 (6.2%)
Ki-67 index	n = 90	n = 37	n = 19	n = 11	n = 17	n = 6
<5%	73 (81.1%)	32 (86.5%)	18 (94.7%)	8 (72.7%)	13 (76.5%)	2 (33.3%)
5–10%	15 (16.7%)	5 (13.5%)	1 (5.3%)	2 (18.2%)	4 (23.5%)	3 (50%)
>10%	2 (2.2%)	0 (0%)	0 (0%)	1 (10.1%)	0 (0%)	1 (16.7%)