Table 1

Summary of the study population and important findings

	Primary tumor	Sex	Age	Level	VAS pre	VAS post	ODI pre	ODI post	MRI after RFA	PET before RFA	PET after RFA
1	Breast	F	49	T10	10	3	28	17
2	Non-small cell	F	68	T8	8	4	45	31	Decreased tumor mass, enhancing rim
				T10					Decreased tumor mass, enhancing rim
3	Adeno lung	F	50	L3	9	4	41	24
				L4
				L1	4	3	24	8
				T12
4	Adeno lung	F	84	T10
5	Breast	F	88	T8	6	2	18	12	Decreased tumor mass, enhancing rim	Positive	Negative
6	Breast	F	84	T11						Negative	Negative
				L1						Positive	Negative
				L2						Negative	Negative
				L3						Negative	Negative
7	Breast	F	52	L2	10	8	45	45	Decreased tumor mass, enhancing rim
				L4					Decreased tumor mass, enhancing rim
8	Breast	F	81	T11					Decreased tumor mass, enhancing rim	Positive	Negative
9	Lung	M	52	T3	8	7	13	8
10	Breast	F	68	L2	9	7	17	13	Decreased tumor mass, enhancing rim	Negative	Negative
				L4					Decreased tumor mass, enhancing rim	Positive	Negative
11	Lung NE	F	71	T8		Deceased
12	Renal	M	63	T8	7	5	27	13		Negative	Negative
13	Breast	F	70	L2	8	2	22	5	Decreased tumor mass, no enhancing rim	Positive	Negative
14	Pancreas	M	53	L1	10	0	35	19
				L3
15	Breast	F	83	T9	10	3	42	27
				L1
16	Lung	M	50	T11	9	6	41	28
				L2
17	Breast	F	76	T7	10	8	31	26	Decreased tumor mass, enhancing rim
				T11					Decreased tumor mass, enhancing rim
18	Lung	M	73	L4	8	4	40	28
19	Breast	F	51	T9	2	0	14	7		Positive	Negative
				L1						Positive	Negative
20	Prostate	M	59	T11	7	7	23	0
21	Melanoma	F	37	L1	10	0	50	26	Decreased tumor mass, enhancing rim	Positive	Negative
				L4					Decreased tumor mass, enhancing rim	Positive	Negative
22	Lung	F	74	T11	8	1	34	30	Decreased tumor mass inside vertebral body, enhancing rim Tumor extending into epidural space and left neural foramen	Negative	Negative vertebral uptake Positive uptake in neural foramen
				T12					Decreased tumor mass, enhancing rim	Negative	Negative
23	Breast	F		L5	6	4	36	27	Decreased tumor mass, enhancing rim
									New epidural extension, different primary
24	Lung	F	56	L2	10	8
				L4
25	Breast	F	44	T12	10	1	35	5
				T10
26	Lung	F	63	T6	10	2	23	8
27	Lung	F	78	T12	10	3	30	12
28	Lung	M	70	T9	9	5	34	19
				T11
29	Pancreas	M	67	L4	10	3	29	18
30	Breast	F	94	L1	8	0	21	2
31	Urothelial	F	61	L1	9	6	43	29
32	Breast	F	64	S1	9	2
33	Lung	M	70	T11	9	3
				L3
34	Breast	F	60	T9	10	2
35	Adeno lung	M	63	L4	7	4
				L5
36	Lung	F	71	L1	7	5
37	Colon	F	50	T9	7	4
38	Renal	M	69	T10	2	10
				T11
39	Prostate	M	70	L3	9	2
40	Breast	F	53	L2	10	3
41	Breast	F	64	T12	6	2				Positive	Negative
42	Breast	F	65	L5	5	1
43	Breast	F	71	T11	10	0
44	Sarcoma	M	37	T4	10	0
				T8
45	Lung	F	71	L2	8	6	35	20
46	Breast	F	57	L3
				L4
47	Breast	F	64	L3	9	6	38	25
48	Lung	M	55	L1	8	6	30	24
49	Lung	M	69	L3	7	5	31	19

NE, Neuro-endocrine tumor; ODI, Oswestry Disability Index; PET, positron emission tomography; RFA, radiofrequency ablation; VAS, Visual Analog Score.