Table 1.

Clinical and pathological data of the study subjects.

	SLN positive (20 cases)	SLN negative (20 cases)
Median age	58.8 (33–79)	62.1 (30–82)
Sex
Male	13 (65%)	12 (60%)
Female	7 (35%)	8 (40%)
Site
Upper extremity	5 (25%)	4 (20%)
Lower extremity	3 (15%)	2 (10%)
Head and neck	1 (5%)	2 (10%)
Acral regions	2 (10%)	2 (10%)
Trunk	9 (45%)	10 (50%)
Thickness range	0.57–14.0 mm	0.2–12.0 mm
Clark's level
II	1 (5%)	2 (10%)
III	9 (45%)	12 (60%)
IV	6 (30%)	4 (20%)
V	4 (20%)	2 (10%)
Ulceration
Absent	6 (30%)	16 (80%)
Present	14 (70%)	4 (20%)
Histotype
SSM	0	2 (10%)
NM	18 (90%)	16 (80%)
ALM	2 (10%)	2 (0%)
Lymphatic invasion
Absent	16 (80%)	20 (100%)
Present	4 (20%)	0