Table 1. Patient Characteristics.

MPNST Patient Characteristics
		n	%
Total MPNST patients		53	100
Genetic Background
	Spontaneous	33	62.3
	NF-1 associated	20	37.7
Tumor Type
	Primary	38	71.7
	Recurrent	10	18.9
	Metastatic	5	9.4
Grade
	High	44	83.0
	Intermediate	8	15.1
	Low	1	1.9
Location
	Extremity	23	43.4
	Pelvic/Retroperitoneal	16	30.2
	Trunk	7	13.2
	Head and Neck	5	9.4
	Other	2	3.8
Neoadjuvant Chemotherapy
	Yes	22	41.5
	No	31	58.5
Neoadjuvant Radiation
	Yes	16	30.2
	No	37	69.8
Tumor Size
	Mean	11.9cm
	Median	10cm
	Range	1-45cm
Follow up
	Mean	6.1 years
	Range	2.3-15.8 years