| Feature | Details |
---|---|---|
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) |