Dermoscopic features of congenital acral melanocytic naevi in children: a prospective comparative and follow-up study

Abstract

CAMNs in children have specific features compared with AAMNs. Our results suggest that small CAMNs need not be excised, but should be followed up.

Clinical and dermoscopic characteristics of congenital melanocytic naevi

“…Little is known about CN on the volar skin, and our series of 38 acral nevi is one of the largest. According to the limited literature, the parallel furrow pattern is the commonest dermoscopic pattern observed on CN of the volar skin, consistent with our results. We found an increased number of CN with a lattice‐like pattern unlike Chuah et al We did not observe any CN with a parallel ridge pattern, a known pattern for melanoma, which is rare in CN of the volar skin .…”

“…According to the limited literature, the parallel furrow pattern is the commonest dermoscopic pattern observed on CN of the volar skin, consistent with our results. We found an increased number of CN with a lattice‐like pattern unlike Chuah et al We did not observe any CN with a parallel ridge pattern, a known pattern for melanoma, which is rare in CN of the volar skin . Lesions demonstrating an homogeneous component, as the two that we detected, have been described before; however, we did not find any CN presenting with a diffuse light background pigmentation, probably a feature in older ages.…”

“…We found an increased number of CN with a lattice-like pattern unlike Chuah et al 28 We did not observe any CN with a parallel ridge pattern, a known pattern for melanoma, which is rare in CN of the volar skin. 27,28 Lesions demonstrating an homogeneous component, as the two that we detected, have been described before; 27,28 however, we did not find any CN presenting with a diffuse light background pigmentation, 27 probably a feature in older ages. Globules and dots around cristae were detected in all dermoscopic patterns of acral CN, as described by other authors, 27 and are an expected finding given that melanocytes in CN are extending around the eccrine glands.…”

Dermoscopic Findings of an Unusual Acral Nevus on the Hand of a Child

“…When examined dermoscopically, these nevi may have bluish‐brown pigment distributed irregularly and the pigment may not be not confined to the fissures or ridges of the skin lines. These nevi may have atypical features that seem indicative of melanoma, such as blue or blue‐white structures , central blue‐grey structures , atypical networklike structures , irregular dots or globules , or atypical blotches , although by definition they do not have a multicomponent pattern .…”

Juvenile melanocytic acral nevus: A comparative study between MANIAC and non‐MANIAC nevus and its clinicopathological characteristics

“…They present a series of distinctive features, due to both their peculiar anatomical location and their age of presentation. Melanocytic acral nevi are also considered dynamic lesions, since they often experience changes in thickness, size and pigmentation over the years . Histologically, an intraepidermal ascent of melanocytes is often observed—hence the acronym MANIAC nevus (“ Melanocytic Acral Nevus with Intraepidermal Ascent of Cells” ), introduced by LeBoit .…”