Table 1 Clinical features of subungual benign melanocytic proliferation and subungual melanoma in situ
Features | Subungual benign melanocytic proliferation (n = 14), n (%) | Subungual Melanoma in situ (n = 13), n (%) | p-value |
|---|---|---|---|
Sex | 0.842 | ||
Male | 7 (50) | 7 (53.8) | |
Female | 7 (50) | 6 (46.2) | |
Age, years | 0.061 | ||
Range | 7-66 | 6-74 | |
Mean ± SD | 30.71 ± 19.83 | 44.92 ± 17.73 | |
Onset age, years | 0.048a | ||
Range | 4-56 | 5-64 | |
Mean ± SD | 25.71 ± 15.97 | 39.46 ± 17.16 | |
Prediagnosis duration, months | 0.756 | ||
Range | 8-240 | 6-180 | |
Mean ± SD | 59.21 ± 67.27 | 66.62 ± 64.12 | |
Location | 0.385 | ||
Finger | 12 (85.7) | 9 (69.2) | |
Toe | 2 (14.3) | 4 (30.8) | |
Width, mm | 0.017a | ||
Range | 1.00-13.00 | 1.50-15.00 | |
Mean ± SD | 3.39 ± 2.90 | 7.81 ± 4.87 | |
Background pigmentation | 1.000 | ||
Yes | 11 (78.6) | 11 (84.6) | |
No | 3 (21.4) | 2 (15.4) | |
Nail dystrophy | 0.596 | ||
Yes | 0 (0.0) | 2 (15.4) | |
No | 14 (100.0) | 11 (84.6) | |
Periungual pigmentation | 0.568 | ||
Yes | 6 (42.9) | 7 (53.8) | |
No | 8 (57.1) | 6 (46.2) |