Table 1 Patient characteristics

Age (mean, years)

51.0 ± 18.7

51.9 ± 17.3

49.2 ± 21.9

0.641

Gender

0.769

 Male

28 (53.8)

18 (51.4)

10 (58.8)

 Female

24 (46.2)

17 (48.6)

7 (41.2)

Duration of follow-up (month)

67.9 ± 44.9

62.6 ± 41.6

78.8 ± 50.6

0.226

Adjuvant chemotherapy

4 (7.7)

2 (5.7)

2 (11.8)

0.589^a

Size (diameter)

1.000^a

  ≤ 5 cm

5 (9.6)

3 (8.6)

2 (11.8)

  > 5 cm

47 (90.4)

32 (91.4)

15 (88.2)

Location (extremity)

0.031^a

 Upper

7 (13.5)

2 (5.7)

5 (29.4)

 Lower

45 (86.5)

33 (94.3)

12 (70.6)

FNCLCC Grade

0.096

 Grade I

15 (20.6)

13 (37.1)

2 (11.8)

 Grade II

21 (40.4)

11 (31.4)

10 (58.8)

 Grade III

16 (30.8)

11 (31.4)

5 (29.4)

Local recurrence

10 (19.2)

4 (11.4)

6 (35.3)

0.062^a

Distant recurrence

21 (40.4)

14 (40.0)

7 (41.2)

0.935