Table 1.

Baseline and Treatment Characteristics

			n=	%
Age
	median	(range)	61	(33–77)
Gender
	Male		4	33
	Female		8	67
Primary Tumor site
	Head/Neck		2	17
	Abdomen/Pelvis		6	50
	Extremeties		4	33
Histology
	Hemangiopericytoma		2	17
	Rhabdomyosarcoma		1	8
	Leiomyosarcoma		6	50
	Myxoid Fibrosarcoma		2	17
	Myxoid Liposarcoma		1	8
KPS
	80		10	83
	90		2	17
Disease Extent at Spine RT Start
	Single metastatic site		0	0
	Disseminated spine/bone only		2	17
	Bone and Visceral sites		10	83
Treated Spinal Site
	Thoracic Spine		2	17
	Lumbar Spine		8	67
	Sacrum		2	17
RT Dose x Fraction
	24 Gy x 1		7	58
	9 Gy x 3		4	33
	10 Gy x 3		1	8
BED
	Median	(range)	81.6	(51.3–81.6)
GTV Volume (cm3)
	Median	(range)	6.6	(1.0–46.5)
PTV Volume (cm3)
	Median	(range)	115.1	(7.6–203.2)
Systemic Therapy Post-RT
	Yes		10	83
	No		2	17