Table 1 Demographics of all the cases.

1

Number of case studied

Total- 41 case

   Males- 21, Females- 20

   Mean age- 56 years (14 – 48 years)

2

Total lymph nodes studied

73 lymph nodes (SLN- 70, non-SLN- 3*) Mean- 1.7 SLN per case (1–4 SLN per case)

   1 SLN- 16 cases

   2 SLN- 17 cases

   3 SLN- 4 cases

   4 SLN- 4 cases

3

Pigmented lesions as indication for SLN biopsy

Melanomas- 39

Atypical Spitzoid nevus- 1

Dysplastic nevus- 1

4

Location of primary pigmented lesion

Head and neck (15), the trunk (11), the upper extremity (6), and the lower extremity (9).

5

Histological type of melanomas (known in 17 cases)^¶

Superficial spreading- 11

Nodular- 5

Superficial spreading with nodular- 1

6

Breslow thickness of primary melanoma (known in 38 patients)

Mean- 2.1 mm (range 0.7 to 8.9 mm)