Table 1. Demographic Characteristics of 45 South Korean Patients With Benign LM or SMIS.
| Characteristic | No. (%) | P Value | |
|---|---|---|---|
| SMIS (n = 19) | Benign LM (n = 26) | ||
| Sex | |||
| Male | 5 (26) | 8 (31) | .75 |
| Female | 14 (74) | 18 (69) | |
| Age, mean (SD), y | 52.0 (14.4) | 48.1 (13.2) | .34 |
| Duration, mean (SD), mo | 75.11 (71.73) | 41.96 (62.23) | .11 |
| Location | |||
| Right hand or foot | 12 (63) | 13 (50) | .38 |
| Left hand or foot | 7 (37) | 13 (50) | |
| Finger | 15 (79) | 18 (69) | .47 |
| Toe | 4 (21) | 8 (31) | |
| Affected digit | |||
| First digit, total | 15 (79) | 12 (46) | .15 |
| Thumb | 11 | 7 | |
| Great toe | 4 | 5 | |
| Second digit, total | 2 (10) | 4 (15) | |
| Finger | 2 | 4 | |
| Toe | 0 | 0 | |
| Third digit, total | 0 | 5 (19) | |
| Finger | 0 | 4 | |
| Toe | 0 | 1 | |
| Fourth digit, total | 2 (10) | 4 (15) | |
| Finger | 2 | 2 | |
| Toe | 0 | 2 | |
| Fifth digit, total | 0 | 1 (4) | |
| Finger | 0 | 1 | |
| Toe | 0 | 0 | |
| Recall of trauma history | 3 (16) | 1 (4) | .30 |
Abbreviations: LM, longitudinal melanonychia; SMIS, subungual melanoma in situ.