Table 2. Demographic characteristics of 17 intracranial hemangiopericytoma patients.

Case No.	Sex	Age	Tumor location	Adjacent vessels	Tumor size (mm)	Extent of resection	Simpson grade	Mitosis (/10 HPF)	Ki-67 (%)	Pathology (WHO grade)	Radiotherapy (cGy)	KPS score (PreOp/final)	Overall survival (mo)	Recurrence (mo)	Metastasis
1	M	29	Sphenoid wing	Yes	50	PR	4	1	N/A	II	6000	20/0	13	3	None
2	M	41	Parasagittal	Yes	40	GTR	3	N/A	17	II	5580	20/20	197	104	None
				Yes	20	GTR	3	2	30	III		20/20		51	None
				Yes	22	GTR	2	12	N/A	III		20/20		9	None
				Yes	54	GTR	2	11	N/A	III		20/20		13	None
				Yes	85	GTR	2	10	30	III	2700 (CK)	20/30		5	None
3	M	58	Convexity	No	60	GTR	1	N/A	3.6	II	6000	60/60	138		None
4	M	52	Tentorial	Yes	30	Biopsy	5	N/A	1	II		90/90	171	3	None
				Yes	40	PR	4	2	1	II		90/100		36	None
				Yes	27	PR	4	1	25	III	1500 (CK)	90/90		63	None
				Yes	33	GTR	2	2	13	III		90/100		24	None
				Yes	26	PR	4	2	13	III	6000	90/100			None
5	M	73	Parasagittal	Yes	60	GTR	3	13	15	III	5400	80/80	21		None
6	M	63	Parasagittal	Yes	59	GTR	2	3	5	III	5949	80/90	53		None
7	M	72	Parasagittal	Yes	56	Biopsy	5	N/A	30	III	6000	40/40	13	4	None
				Yes	61	PR	4	10	30	III		40/0		1	None
8	M	40	Tentorial	Yes	50	GTR	2	5	10	III	5940	90/90	21		None
9	M	26	Falx	Yes	59	PR	4	N/A	1	II		80/30	26	19	None
10	M	35	Parasagittal	Yes	55	GTR	2	N/A	3	II	5400	90/100	41		None
11	M	38	Parasagittal	Yes	56	GTR	2	7	20	III	6000	90/90	32		None
12	F	42	Falx	Yes	45	GTR	2	3	5	II	5500	90/80	33		None
13	M	56	CPA	Yes	24	PR	4	N/A	1	II	5000	90/90	118		None
14	F	63	Convexity	No	36	GTR	1	2	10	II	6000	80/80	13		None
15	M	37	Parasagittal	Yes	45	PR	4	11	40	III	6000	70/80	16		None
16	M	63	Parasagittal	Yes	48	GTR	2	23	15	III	5940	80/90	19		None
17	F	28	Tentorial	Yes	58	GTR	2	1	5	II	5400	80/100	10		None

No., number; M, male; F, female; WHO, World Health Organization; CPA, cerebellopontine angle; GTR, grossly total resection; PR, partial resection; CK, cyberknife; KPS, Karnofsky performance scale; N/A, not available