Conflict of interest
Benign dermoscopic features in melanoma
Article first published online: 1 JUN 2013
© 2013 European Academy of Dermatology and Venereology
Journal of the European Academy of Dermatology and Venereology
Volume 28, Issue 6, pages 799–804, June 2014
How to Cite
Di Stefani, A., Massone, C., Soyer, H.P., Zalaudek, I., Argenziano, G., Arzberger, E., Lozzi, G.P., Chimenti, S. and Hofmann-Wellenhof, R. (2014), Benign dermoscopic features in melanoma. Journal of the European Academy of Dermatology and Venereology, 28: 799–804. doi: 10.1111/jdv.12192
There are no potential conflicts of or competing interests to disclose.
- Issue published online: 10 MAY 2014
- Article first published online: 1 JUN 2013
- Manuscript Accepted: 6 MAY 2013
- Manuscript Received: 16 FEB 2013
Various dermoscopic features are usually associated with benign melanocytic lesions. Our objective was to determine frequency and extension of benign dermoscopic features (BDF) in melanoma.
Retrospective review of dermoscopic images of a consecutive series of 516 histopathologically proven melanomas collected in 6 years in Graz. Correlation of BDF with mean Breslow thickness, with presence/absence of associated benign nevus component and with the pre-operative clinico-dermoscopic diagnosis, as reported on the original histopathologic reports.
In addition to melanoma specific criteria, 42% of melanomas showed BDF. In 12.3% cases, the benign features occupied more than the half of the lesion. The BDF typical pigment network, homogeneous pattern and regular globules/cobblestone pattern had the highest frequency. BDF were associated with relatively thinner melanomas (mean Breslow thickness of 0.51 mm). The presence of BDF was observed in 67.1% of histopathologically documented nevus-associated melanoma and in 35.7% of melanoma de novo. A pre-operative clinico-dermoscopic diagnosis of melanoma was achieved in only 54.1% of cases displaying BDF.
A significant proportion of melanomas may exhibit BDF. Clinicians should be aware of the presence of BDF in melanoma as possible diagnostic pitfall.