Table 3.

Factors affecting outcomes.

Factors	GOS 4–5 n (%)	GOS 1–3 n (%)		p
Diameter of tumors
≥ 30 mm	17 (68)	8 (32)		0.03
< 30 mm	11 (100)	0
Flow-void within tumor on MRI
Yes	3 (42.9)	4 (57.1)		0.01
No	25 (86.2)	4 (13.8)
Invade Meckel's cave
Yes	8 (57.1)	6 (42.9)		0.02
No	20 (90.9)	2 (9.1)
Invade jugular foramen
Yes	7 (58.3)	5 (41.7)		0.05
No	21 (87.5)	3 (12.5)
Brainstem compression
Yes	17 (68)	8 (32)		0.03
No	11 (100)	0
Brainstem edema
Yes	7 (58.3)	5 (41.7)		0.05
No	21 (87.5)	3 (12.5)
Aspiration pneumonia
Yes	1 (33.3)	2 (66.7)		0.05
No	27 (81.8)	6 (18.2)
Post-op CT scan
No significant brain contusion	25 (92.6)	2 (7.4)		0.001
Brain contusion/hematoma	3 (37.5)	5 (62.5)
Post-op hydrocephalus	0	1 (100)
	Aspiration pneumonia
Invade foramen magnum	Yes	No
Yes	2 (16.7)	10 (83.3)		0.03
No	1 (4.2)	23 (95.8)
Injuries of the lower cranial nerves
Yes	2 (28.6)	5 (71.4)		0.03
No	1 (3.4)	28 (96.6)
Post-op vertigo
Yes	3 (20)	12 (80)		0.03
No	0	21 (100)
	Facial palsy
Invade IAM	No	Mild	Severe
Yes	5 (23.8)	8 (38.1)	8 (38.1)	0.04
No	2 (13.3)	12 (80)	1 (6.7)