Abstract
Introduction: Skin cancer is the most frequent malignant neoplasm in Brazil. Its prognosis
is directly related to early diagnosis and institution of adequate
treatment. The Skin Cancer National Awareness Campaign (SCNAC) is an
essential tool to prevent and detect malignant skin lesions.
Objectives::
To investigate the incidence of skin cancer and the accuracy of dermoscopy in
patients assessed at the SCNAC.
Methods: We conducted a retrospective cohort study using directly the data collected
from the population assisted at the SCNAC day in 2016, 2017, and 2018 at
Clinical Center of the Universidade de Caxias do Sul (CECLIN-UCS).
Results: Of the 634 patients included, 105 were referred for biopsy with
histopathological study of the lesion. Dermoscopy was suggestive of a
malignant lesion in 55 cases. Biopsy diagnosed malignant lesions in 43
patients and benign lesions in 32 patients. Thus, the sensitivity and
specificity of the test were 86% and 50%, respectively. The accuracy of
dermoscopy in identifying malignant lesions over the three years of the
campaign was around 70%.
Conclusions: Dermoscopy in SCNAC has a good level of sensitivity and specificity when
correlated with final histopathological results.