Table 1 Baseline of patients’ characteristics (n = 42)

Age, median (range)

28 year (16–82 year)

 <28yr

20

47.6

 ≥28yr

22

52.4

Gender

 Male

23

54.8

 Female

19

45.2

Histology

 Embryonal

16

38.1

 Alveolar

21

50.0

 Pleomorphic

3

7.1

 NOS

2

4.8

Primary site

 Orbital

1

2.4

 Parameningeal

26

61.9

 Non-orbital/non-parameningeal

15

35.7

Primary tumor size

 ≤ 5 cm

19

45.2

 > 5 cm

23

54.8

Nodal status

 N0

23

54.8

 N1

19

45.2

Disease status

 Localized (N0M0)

21

50.0

 Regional (N1M0)

16

38.1

 Distant (M1)

5

11.9

IRS pretreatment staging

 Stage I

15

35.7

 Stage II

2

4.8

 Stage III

20

47.6

 Stage IV

5

11.9

IRS postsurgical grouping

 Group I

9

21.4

 Group II

11

26.2

 Group III

17

40.5

 Group IV

5

11.9

Surgery margins

 Negative (R0)

10

40.0

 Positive (R1/2)

15

60.0

Treatment patterns

 Surgery + Chemotherapy + RT

23

54.7

 Surgery + RT

2

4.8

 Chemotherapy + RT

16

38.1

 RT

1

2.4