Table 1.
Dermoscopic features of Amelanotic and hypomelanotic melanoma in our study
| Dermoscopic criteria | AHM ≤ 1mm in thickness (n = 10) | AHM > 1 mm in thickness (n = 36) | AHM in situ (n = 3) | Total AHM (n = 49) | ||||
|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | |
| Dotted vessels | 9 | 90.0 | 16 | 44.4 | 3 | 100 | 28 | 57.1 |
| Linear vessels | 5 | 50.0 | 23 | 63.9 | 3 | 100 | 31 | 63.2 |
| Looped vessels | 3 | 30.0 | 26 | 72.2 | 2 | 66.7 | 31 | 63.3 |
| Granular structures | 5 | 50.0 | 16 | 44.4 | 1 | 33.3 | 22 | 44.9 |
| Short white lines | 8 | 80.0 | 28 | 77.8 | 3 | 100 | 39 | 79.6 |
| Lacuna structures | 3 | 30.0 | 10 | 27.8 | 0 | 0 | 13 | 26.5 |
| Milky-red areas | 7 | 70.0 | 23 | 63.9 | 3 | 100 | 33 | 67.3 |
| Remnant pigment | 7 | 70.0 | 18 | 50.0 | 2 | 66.7 | 27 | 55.1 |
| Polymorphous vessels | 6 | 60.0 | 22 | 61.1 | 3 | 100 | 31 | 63.2 |
AHM = amelanotic and hypomelanotic melanomas.