Table 1 Patient characteristics

Number of Pt.

20

29

30

Age at diagnosis (years)

 Mean (SD) [range]

14.4(3.4) [8–20]

13.2 (3.6) [4–20]

14.6(2.8) [9–21]

p = 0.24

Gender

 Male

3

11

6

 Female

17

18

24

Tumor size, cm

p = 0.74

  < 2

14

15

10

 2–4

5

12

12

  > 4

1

2

8

US characteristics

 Cystic components

4 (20 %)

13 (44.8 %)

3 (10 %)