Table 2.
Frequencies of Colors and Dermoscopic Structures, by Tumor Thickness
| Feature | Melanoma in situ (n = 52) | Melanoma <0.8 mm (n =98) | Melanoma ≥0.8 mm (n = 95) | P |
|---|---|---|---|---|
|
| ||||
| Color | ||||
| Light brown | 50 (96.2) | 93 (94.9) | 78 (82.1) | .003 |
|
| ||||
| Dark brown | 49 (94.2) | 92 (93.9) | 79 (83.2) | .240 |
|
| ||||
| Black | 34 (65.4) | 47 (48.0) | 55 (57.9) | .104 |
|
| ||||
| Blue-gray | 22 (42.3) | 58 (59.2) | 77 (81.1) | .000 |
|
| ||||
| Red-pink | 6 (11.5) | 22 (22.4) | 49 (51.6) | .000 |
|
| ||||
| White | 6 (11.5) | 23 (23.5) | 41 (43.2) | .000 |
| Three or more colors | 42 (80.8) | 81 (82.7) | 84 (88.4) | .383 |
|
| ||||
| Atypical pigmented network | 36 (69.2) | 41 (41.8) | 33 (34.7) | .000 |
|
| ||||
| Irregular globules | 22 (42.3) | 51 (52.0) | 37 (38.9) | .172 |
|
| ||||
| Irregular blotches | 22 (42.3) | 54 (55.1) | 40 (42.1) | .139 |
|
| ||||
| Regression | 21 (40.4) | 47 (48.0) | 24 (25.3) | .004 |
|
| ||||
| Shiny white streaks | 9 (17.3) | 35 (35.7) | 52 (54.7) | .000 |
|
| ||||
| Hypopigmented areas | 8 (15.4) | 15 (15.3) | 6 (6.3) | .104 |
|
| ||||
| Streaks | 7 (13.5) | 23 (23.5) | 18 (18.9) | .333 |
|
| ||||
| Prominent skin markings | 6 (11.5) | 7 (7.1) | 5 (5.3) | .376 |
|
| ||||
| Structureless brown areas | 5 (9.6) | 13 (13.3) | 15 (15.8) | .576 |
|
| ||||
| Blue-white veil | 4 (7.7) | 17 (17.3) | 55 (57.9) | .000 |
|
| ||||
| Negative pigment network | 4 (7.7) | 7 (7.1) | 7 (7.4) | .992 |
|
| ||||
| Irregular vessels | 4 (7.7) | 21 (21.4) | 41 (43.2) | .000 |
|
| ||||
| Blue-black pigmentation | 3 (5.8) | 5 (5.1) | 18 (18.9) | .003 |
|
| ||||
| Milky red areas | 2 (3.8) | 14 (14.3) | 34 (35.8) | .000 |
|
| ||||
| Ulceration | 0 (0) | 4 (4.1) | 35 (36.8) | .000 |
|
| ||||
| Rainbow pattern | 0 (0) | 6 (6.1) | 25 (26.3) | .000 |
|
| ||||
| Pseudolacunae | 0 (0) | 3 (3.1) | 23 (24.2) | .000 |