Gamma knife radiosurgery (GKRS) for pineal region tumors: a study of 147 cases

Table 4 Evaluation of GCTs (40 cases) after GKRS treatment

	CR (%)	PR (%)	MR (%)	NC (%)	PROGR (%)	Total number	LTCR (%)	ATV (cm³)	Karnofsky scoring	Survival rate (%)
Before treatment								7.28	76.25
1 year after treatment	14 (45.16)	12 (38.71)	2 (6.45)	2 (6.45)	1 (3.23)	31	96.70	2.21	85.22 ± 9.15	77.5
3 years after treatment	11 (44.00)	8 (32.00)	1 (4.00)	2 (8.00)	3 (12.00)	25	88.00	2.54	72.52 ± 14.58	62.4
5 years after treatment	8 (36.36)	7 (31.82)	1 (4.55)	1 (4.55)	5 (22.73)	22	77.27	2.91	66.14 ± 16.86	54.5

Abbreviations: GCTs germ cell tumors, GKRS gamma knife radiosurgery, CR complete response (tumor disappearance), PR partial response (≥50 % tumor volume reduction), MR minor response (25–50 % reduction), NC no change (<25 % reduction), PROGR progression (tumor enlargement), LTCR local tumor control rate = CR + PR + MR + NC/total, ATV average tumor volume

ISSN: 1477-7819