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ISSN 1405-1710 (Print)

2018, Number 3

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Rev Cent Dermatol Pascua 2018; 27 (3)

Diagnostic accuracy of dermatoscopy to differentiate between atypical and common nevi

Vidal-Flores AA, Morales-Sánchez MA, Peralta-Pedrero ML, Jurado-Santa Cruz F

Language: Spanish
References: 12
Page: 81-86
PDF size: 157.60 Kb.


ABSTRACT

Introduction: Dermoscopy is a diagnostic tool for the study of melanocytic lesions, whose main objective is to perform an early diagnosis of melanoma and identify atypical nevi. The aim of this study was to assess the diagnostic accuracy of dermoscopy structures, to differentiate an atypical nevus from a common nevus. Material and methods: A diagnostic test study was conducted from April 1st, 2016 to June 30th, 2017. All the melanocytic lesions that were surgically excised and sent for histological study were analyzed. The result of the histological study was the gold standard and the dermoscopy structures found were the diagnostic test. The OpenEpi version 3.01 program was used to calculate the sensitivity, specificity and predictive values. Results: Seventy seven melanocytic lesions were analyzed by dermoscopy, from 67 patients, of whom 64 (83.1%) were women and 13 (16.9%) men. In relation to the dermoscopy structures, the atypical pigment network had the highest sensitivity for the diagnosis of atypical nevus, of 76.9% (95% CI 45.9-93.8%). Regarding global pattern found in nevi, the highest sensitivity was obtained by the reticular pattern with 46.1% (95% CI 20.4 to 73.8%). Conclusions: The presence of an atypical pigment network and a global reticular pattern suggest that a nevus is atypical, previously assessing the clinical context of the lesion studied.


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