Table 1 SLN: sentinel lymph node

Number

203*

44/197* (22%)

153/197* (78%)

Sex

0.2706

Men

100 (49.3%)

18 (41%)

76 (50%)

Women

103 (50.7%)

26 (59%)

77 (50%)

Mean age (+/− SD)

55.8 +/−15.6

52.0 +/−17.4

56.6 +/−15.0

0.0864

Localization

0.1483

Trunk

74 (36.5%)

17 (38.6%)

54 (35.3%)

Upper limb

39 (19.2%)

3 (6.8%)

33 (21.6%)

Lower limb

63 (31.0%)

16 (36.4%)

47 (30.7%)

Hands and feet

27 (13.3%)

8 (18.2%)

19 (12.4%)

Type

0.6978

Superficial

115 (56.6%)

25 (56.8%)

86 (56.2%)

Nodular

39 (19.2%)

6 (13.6%)

31 (20.3%)

Acral

17 (8.4%)

4 (9.1%)

13 (8.5%)

Other

32 (15.8%)

9 (20.5%)

23 (15.0%)

Mean tumor thickness (range)

1.88 (0.4 - 10.1)

2.8 (1.2 - 10)

1.6 (0.4 - 10.1)

0.0289

T stage[2]

0.0172

T1

10 (4.9%)

0

10 (6.5%)

T2

101 (49.7%)

15 (34.1%)

83 (54.3%)

T3

55 (27.1%)

17 (38.6%)

36 (23.5%)

T4

33 (16.3%)

11 (25.0%)

21 (13.7%)

Incalculable¹

4 (2.0%)

1 (2.3%)

3 (2.0%)

Clark level

0.3677

I

1 (0.5%)

0

1 (0.7%)

II

10 (4.9%)

2 (4.5%)

8 (5.2%)

III

56 (27.6%)

9 (20.5%)

46 (30.1%)

IV

100 (49.3%)

26 (59.1%)

70 (45.7%)

V

12 (5.9%)

4 (9.1%)

7 (4.6%)

Unknown

24 (11.8%)

3 (6.8%)

21 (13.7%)

Ulceration

0.0080

Yes

60 (29.6%)

21 (47.7%)

37 (24.2%)

No

131 (64.5%)

20 (45.5%)

107 (69.9%)

Unknown

12 (5.9%)

3 (6.8%)

9 (5.9%)