Table 2.
Clinical, epidemiologic and histopathologic features of the patients seen at the services of dermatology and surgical oncology (1995-2012)
| Variable | Number | % |
|---|---|---|
| Gender | ||
| Male | 219 | 42.6 |
| Female | 295 | 57.4 |
| Skin type | ||
| Caucasian | 349 | 67.9 |
| Brown | 48 | 9.3 |
| Black | 4 | 0.8 |
| Yellow* | 0 | 0 |
| No information* | 113 | 22.0 |
| Age | ||
| 18-40 years | 123 | 23.9 |
| 40-60 years | 195 | 37.9 |
| > 60 years | 186 | 36.2 |
| No information* | 10 | 2.0 |
| Family history of melanoma* | ||
| Yes | 59 | 11.5 |
| No | 356 | 69.3 |
| No information * | 99 | 19.2 |
| Site | ||
| Head and neck | 88 | 17.1 |
| Trunk | 187 | 36.4 |
| Upper limbs | 65 | 12.6 |
| Lower limbs | 80 | 15.6 |
| Acral | 85 | 16.5 |
| No information* | 9 | 1.8 |
| Clinicopathological type | ||
| Superficial spreading | 202 | 39.3 |
| Lentigo maligna melanoma | 38 | 7.4 |
| Nodular | 74 | 14.4 |
| Acral | 44 | 8.6 |
| Other | 14 | 2.7 |
| No information* | 142 | 27.6 |
| Clark level | ||
| I and II | 147 | 28.6 |
| III | 149 | 29.0 |
| IV and V | 149 | 29.0 |
| No information* | 69 | 13.4 |
| Breslow thickness | ||
| ≤1mm | 236 | 45.9 |
| 1,01 to 2mm | 86 | 16.7 |
| 2,01 to 4mm | 70 | 13.6 |
| > 4mm | 44 | 8.6 |
| No information* | 78 | 15.2 |
| Ulceration | ||
| Yes | 70 | 13.6 |
| No | 201 | 39.1 |
| No information* | 243 | 47.3 |
| Mitotic index | ||
| 0 | 87 | 16.9 |
| 1 to 4 | 137 | 26.7 |
| 5 to 10 | 45 | 8.7 |
| ≥ 11 | 23 | 4.5 |
| No information * | 222 | 43.2 |
*
Excluded from statistical analysis.