characteristics

NO %

P value

Age

Median ± SD

Min - max

13 ± 3.707

5 - 19 y

P = 0.858 N.S.

Sex male

Female

15 53.6%

13 46.4%

P = 0.248 N.S.

Site axial

Pelvic

peripheral

4 14.3%

8 28.6%

16 57.1%

P = 0.156 N.S.

ECOG PS 0

1

2

2 7.1%

10 35.7%

16 57.1%

P = 0.079 N.S.

Presentation

Palpable mass

No palpable mass

22 78.6%

6 21.4%

P = 0.248 N.S.

Type of biopsy

Core needle

Incisional

Excisional

12 42.9%

10 35.7%

6 21.4%

P = 0.794 N.S.

CD 99 not done

Positive

6 21.4%

22 78.6%

P = 0.180 N.S.

LDH high

Normal

22 78.6%

6 21.4%

P = 0.795 N.S.

Size < 8 cm

8 cm

>8 cm

11 39.3%

4 14.3%

13 46.4%

P < 0.001

Pretreatment MRI

Only bone lesion

Bone and soft tissue

12 42.9%

16 57.1%

P = 0.543 N.S.

Surgery

Incomplete excision

No surgery

6 21.4%

22 78.6%

P = 0.180 N.S.