Frequency of Dermoscopic Nevus Subtypes by Age, Skin Phototype and Body Site,
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- Category: Vol. 84, March 2016
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Frequency of Dermoscopic Nevus Subtypes by Age, Skin Phototype and Body Site, HESHAM ZAHER, DALIA BASSIOUNY, RANIA ABD EL-HAY, NESREEN SAMIR and NANEES RAGAB
Abstract
Background: The dermoscopic patterns of nevi were found to be related to a variety of factors such as age, the patient's pigmentary phototype and the location on the body.
Aim of Study: To detect frequency of dermoscopic nevus subtypes stratified by patient age and skin phototype and location of the nevi.
Patients and Methods: 3 0 patients were enrolled in the study in which the age and skin phototype were determined. 59 acquired melanocytic nevi were studied. The location was determined. Each nevus was examined dermoscopically in which the diagnosis was confirmed and the global dermoscopic pattern was detected. Nevi were dermoscopically subclassified as globular, reticular and mixed (reticular-globular) pattern.
Results: The commonest dermoscopic subtype in the studied group was the reticular type. A statistically significant association was found between the skin phototype and der-moscoic pattern (p=0.026). Individuals with skin phototype IV were more likely to have a reticular pattern. No statistically significant association was found between age and dermoscopic nevus pattern. No statistically significant association was found between location of nevus and dermoscopic nevus pattern.
Conclusion: The reticular pattern is the commonest der-moscopic nevus pattern in adults. The dermoscopic pattern of nevi is influenced by the skin phototype. The reticular pattern is more common among the darker skin phototypes (phototype IV).