Table 1. Summary of primary spinal primitive neuroectodermal tumor of our institute.

	Gender	Age (yr.)	Location	MR	Other signs on image examination	Other case information	Adjuvant therapy	Follow-up
1	F	9	C2–4	T1-T2-, homogeneous enhancement.	Extramedullary, Extend extraspinal through interspinal foramen.	—	Chemotherapy	Recurrent and died 9 month later.
2	M	9	C2–7	T1↓T2↑, prominent enhancement.	Intramedullary.	—	Radiotherapy & Chemotherapy	Recurrent and died 12 months later.
3	F	18	T11–S1	T1-T2-↑, heterogeneous enhancement.	Extramedullary, Multiple.	A recurrence at admission.	Radiotherapy	Recurrent and died 16 months later.
4	F	25	L5–S1	T1↓T2↑, prominent enhancement.	Extramedullary, Extend extraspinal through interspinal foramen.	—	No	Died (Family were reluctant to offer time of death).
5	F	7	L4	T1-T2-, homogeneous enhancement.	Extramedullary, Extend extraspinal through interspinal foramen.	—	Not clear	Loss
6	F	43	L5–S1	Heterogeneous T1/T2, prominent enhancement.	Extramedullary, Extend extraspinal through interspinal foramen.	—	Not clear	Loss
7	F	18	L5–S1	T1-T2↑, slight enhancement.	Extramedullary, Extend extraspinal through interspinal foramen.	A recurrence at admission.	Not clear	Loss
8	M	7	S1–3	T1-T2-, medium enhancement.	Extramedullary.	—	No	Died (Family were reluctant to offer time of death).

M, male; F, female; yr., years old; -, iso-intensive; ↑, hyper-intensive; ↓, hypo-intensive.