Dermoscopic features of acral melanocytic nevi in a case series from Mexico

Abstract

BackgroundPigmented lesions on acral sites are common; clinical differentiation of nevi and early melanoma can be challenging. In these cases, dermoscopy can provide a more accurate diagnosis. Most dermoscopic patterns on acral skin have been described in Asian and European populations, while there are few studies in Latin American populations.ObjectivesTo determine the frequency of pigmented lesions in volar skin and their dermoscopic patterns in a Mexican population. Methods: An observational, descriptive, cross-sectional study was performed in Hispanic patients with the presence of at least one pigmented lesion on acral skin. Clinical and dermoscopic images were obtained. These were subsequently evaluated independently by two dermatologists trained and experienced in dermoscopy.ResultsA total of 582 pigmented lesions on volar skin were diagnosed in 321 patients. Overall, prevalence of acral pigmented lesions on volar skin was 6.8%. For both observers, parallel furrows were the most frequent pattern described, but for observer 2, a lattice-like pattern was prevalent on the toes and a homogeneous pattern on the sides of the feet. There was lower inter-observer agreement, with a kappa index of 0.144.Study limitationsThe lesions were not biopsied, so clinical-histological correlation could not be performed. The study did not correlate dermoscopic patterns with age.Conclusions.As previously reported by other authors, parallel furrows were the most frequently found dermoscopic pattern on palmoplantar skin.

Acral Melanocytic Nevi in a High-Risk Population: Prevalence, Clinical Characteristics and Dermatoscopic Patterns

“…In our cohort, parallel furrow lines were the most common pattern (shown in Fig. 1), accounting for 44.0% of our lesions, in concordance with previous studies [9–11, 15, 16, 21, 22]. Interestingly, in 76 lesions (22.8%), we observed a previously undescribed dermatoscopic pattern characterized by wavy lines (shown in Fig.…”

A European Multicentric Investigation of Atypical Melanocytic Skin Lesions of Palms and Soles: The iDScore-PalmoPlantar Database

“…The current knowledge on clinical and epidemiologic features of PP nevi delineates the profile of a small (usually under 6 mm) macule, symmetric in shape and with homogenous pigmentation [ 9 , 13 , 16 , 38 ], and mainly derive from Asiatic [ 4 , 39 , 40 ] or South American countries [ 4 , 41 , 42 ], with fewer reports from South European countries [ 2 , 7 , 9 ]. However, equivocal aMPPLs have been poorly or not investigated, especially in Europe [ 26 ].…”

Lesiones eruptivas palmoplantares inducidas por capecitabina: informe de un caso evaluado con dermatoscopia

“…Se realiza a través del dermatoscopio, el cual contiene una lente con emisión de luz polarizada y no polarizada, con la cual pueden evaluarse los nevos y otras lesiones cutáneas, de una forma más detallada y con mejor precisión diagnóstica en comparación con la exploración a simple vista 27 . Los patrones dermatoscópicos acrales benignos y malignos están bien caracterizados y se han estudiado en poblaciones caucásicas 28 , asiáticas 29 y latinas 30 , por lo cual resulta sencillo identificar si una lesión requiere medidas quirúrgicas prioritarias, un seguimiento o tan sólo descartarse para seguimientos posteriores. Es importante conocer los diferentes patrones dermoscópicos de las lesiones melanocíticas y descartar su malignidad con certeza.…”