Retrosigmoid-transtentorial approach for petroclival meningiomas: operative technique and clinical outcome

Table 3 The main factors affecting rate of GTR

Relative factors		GTR/N	%	χ²	p
Size (mm)	10 ~ 24	4/4	100	8.083	0.018
	25 ~ 44	24/28	85.7
	≥45	18/32	56.3
Subtype	Clivus	26/28	92.9	11.201	0.004
	Petroclival	8/13	61.5
	Sphenopetroclival	12/23	52.2
Cavernous Sinus	Invasion	8/17	47.1	7.052	0.008
Cavernous Sinus	No invasion	38/47	80.9
Brainstem Compression	Mild	21/24	87.5	10.584	0.005
	Moderate	15/23	65.2
	Severe	10/17	58.8
Consistency	Soft	12/14	85.7	5.260	0.072
	moderate	20/25	80.0
	Tough	14/25	56.0

ISSN: 2057-4967