Dermoscopy for acral pigmented skin lesions

Dermoscopic Patterns of Acral Melanocytic Nevi and Melanomas in a White Population in Central Italy

“…Although our sample size was limited, the parallel ridge pattern was the most common dermo- scopic pattern in early acral melanoma, whereas the multicomponent pattern was seen in 5 of 7 invasive acral melanomas and the irregular diffuse pigmentation was the most prominent feature in 2 of 7 invasive melanomas. Consistent with previous reports, 11,12 our results demonstrated that acral melanomas may show a pattern typical of benign acral lesions, such as parallel furrow or fibrillar pattern, but in such cases, the benign pattern is focally located within the lesion. By contrast, in acral nevi, the benign pattern appears evenly distributed throughout the whole lesion.…”

“…[9][10][11][12] By contrast, 4 distinctive dermoscopic patterns were described for acral melanocytic nevi: (1) the parallel furrow pattern, in which pigmentation is seen on the parallel sulci of the skin markings (variants of this pattern are the globular subtype and the double-lined subtype); (2) the latticelike pattern, which is characterized by pigmented lines that follow and cross the skin markings; (3) the fibrillar pattern, in which pigmented lines cross the skin markings diagonally; and (4) the nontypical pattern, which is characterized by dermoscopic features that do not conform to any of the other typical patterns and cannot be classified as the multicomponent pattern. [9][10][11] Malvehy and Puig 13 recently described 3 additional dermoscopic patterns of acral nevi in patients with atypical mole syndrome: (1) the globular pattern, in which brown globules are regularly distributed within the lesion; (2) the homogeneous pattern, which is distinguished by diffuse light-brown or blue pigmentation; and (3) the reticular pattern, which is characterized by a black/brown network similar to that observed in melanocytic lesions that are located on nonglabrous skin.…”

Dermoscopic Changes in Acral Melanocytic Nevi During Digital Follow-up

“…2007;143(11): [1372][1373][1374][1375][1376] T HE ANATOMIC STRUCTURE OF acral volar skin determines unique dermoscopic features of pigmented skin lesions located in this anatomic site. [1][2][3] Saida et al 1,4 examined acral melanocytic nevi in an Asian population and first described specific dermoscopic features of these lesions: the parallel furrow pattern and its globular and double-lined variants, the latticelike pattern, the fibrillar pattern, and the nontypical pattern. Three additional dermoscopic features of acral melanocytic nevi, namely the globular, homogeneous, and reticular patterns, were subsequently described in patients with atypical mole syndrome.…”

Literature Update on Melanocytic Nevi and Pigmented Lesions in the Pediatric Population

“…A combination of crista dotted and parallel furrow patterns, termed "peas-in-a-pod" pattern, was the most common dermatoscopic feature noted in the acral CMN (38 %). In contrast, most cases of acral AMN exhibit the parallel furrow, latticelike, or fibrillar pattern, and the majority of early acral melanomas demonstrate a parallel ridge pattern [10,11]. It should be mentioned that one acral CMN in this study showed the parallel ridge pattern similar to acral melanomas; however, the lesion was clinically stable for several years, suggestive of a benign nevus.…”