Table 2 Main clinical and histological characteristics of 1073 melanoma patients
From: Melanoma characteristics in Brazil: demographics, treatment, and survival analysis
Characteristics | Number | % |
|---|---|---|
Anatomical location (primary tumour) | ||
Trunk | 347 | 32.2 |
Lower extremities | 300 | 28.0 |
Head and neck | 197 | 18.4 |
Upper extremities | 149 | 13.9 |
Mucosa | 3 | 0.3 |
Multiple | 2 | 0.2 |
Unknown | 9 | 0.8 |
Not available | 66 | 6.2 |
Histological subtype | ||
Superficial spreading | 353 | 32.9 |
Nodular | 288 | 26.8 |
Acral lentiginous | 76 | 7.1 |
Lentigo maligna melanoma | 40 | 3.7 |
Other/not classified | 156 | 14.6 |
Not available | 160 | 14.9 |
Tumour depth (Breslow) | ||
Up to 1.0 mm | 225 | 21.0 |
1.1 to 2.0 mm | 184 | 17.1 |
2.1 to 4.0 mm | 171 | 15.9 |
More than 4.0 mm | 231 | 21.5 |
Not available | 262 | 24.4 |
Clark classification | ||
II | 110 | 10.3 |
III | 269 | 25.1 |
IV | 350 | 32.6 |
V | 129 | 12.0 |
Not available | 216 | 20.0 |
Ulceration | ||
Present | 307 | 28.6 |
Absent | 371 | 34.6 |
Not available | 395 | 36.8 |
Mitotic index | ||
Up to 1 mitosis/mm2 | 104 | 9.7 |
More than 1 mitosis/mm2 | 260 | 24.2 |
Not available | 709 | 66.1 |
Lymph node status | ||
N0 | 615 | 57.3 |
N1 | 87 | 8.1 |
N2 | 72 | 6.6 |
N3 | 87 | 8.1 |
Not available | 212 | 19.8 |
Clinical stage (AJCC) | ||
I | 296 | 27.6 |
II | 271 | 25.3 |
III | 214 | 19.9 |
IV | 168 | 15.7 |
Not available | 124 | 11.6 |