Table 1.
Characteristics of patients with large congenital melanocytic nevi evaluated at the Department of Dermatology at UFMG
| Parameter | n | % |
|---|---|---|
| Gender | ||
| Male | 29 | 50.9 |
| Female | 28 | 49.1 |
| Age at start of follow-up (years) | ||
| Mean ± standard deviation | 8.3 ± 12.1 | |
| Median | 2.6 | |
| Follow-up (years) | ||
| Mean ± standard deviation | 5.5 ± 3.8 | |
| Median | 5.2 | |
| Skin color | ||
| Caucasian | 32 | 56.1 |
| Mulatto | 22 | 38.6 |
| Black | 3 | 5.3 |
| Family history of melanoma | ||
| Yes | 0 | 0 |
| No | 55 | 96.5 |
| No information | 2 | 3.5 |
| Family history of CMN | ||
| Yes | 20 | 35.1 |
| No | 32 | 56.1 |
| No information | 5 | 8.8 |
| Localization of LCMN | ||
| Back | 16 | 28.1 |
| Front trunk | 4 | 7.0 |
| Bathing trunk variety | 19 | 33.3 |
| Upper limb | 1 | 1.8 |
| Lower limb | 7 | 12.3 |
| Head/neck | 10 | 17.5 |
| Number of satellite nevi | ||
| Zero | 8 | 14.0 |
| 1-9 | 10 | 17.5 |
| 10-29 | 9 | 15.8 |
| 30-49 | 8 | 14.0 |
| ≥50 | 21 | 36.9 |
| No information | 1 | 1.8 |
| Neurological symptoms | ||
| Yes | 4 | 7.0 |
| No | 53 | 93.0 |
| Neurological work-up† | ||
| None | 20 | 35.1 |
| Computed tomography | 28 | 49.1 |
| Magnetic resonance imaging | 11 | 19.3 |
| No information | 4 | 7.0 |
| Neurocutaneous melanosis | ||
| Symptomatic | 0 | 0 |
| Asymptomatic | 1 | 1.8 |
| Absent or unknown | 56 | 98.2 |
| Treatment of LCMN‡ | ||
| Clinical observation | 43 | 75.4 |
| Partial excision | 6 | 10.5 |
| Complete excision | 3 | 5.3 |
| Other | 9 | 15.8 |
| Dermabrasion | 4 | 7.0 |
| Laser | 2 | 3.5 |
| Excision of satellite lesions | ||
| Yes | 5 | 8.8 |
| No | 50 | 87.7 |
| No information | 2 | 3.5 |
| Occurrence of melanoma | ||
| Yes | 2 | 3.5 |
| No | 55 | 96.5 |
CMN - congenital melanocytic nevus; LCMN - large congenital melanocytic nevus.
†
Twelve patients underwent more than one examination.
‡
Three patients had undergone more than one type of invasive treatment.