Dermoscopy of Naevus-associated Melanomas

Dermoscopy of Naevus-associated Melanomas.

In order to determine dermoscopic parameters, a case-control test set of naevus-associated melanomas vs de novo melanomas paired by Breslow thickness and histopathological subtype was analysed by 2 blinded experienced dermoscopists, according to presence of naevus, pattern analysis and ABCD dermoscopy score. The ability to identify naevus-associated melanomas by pattern analysis was low for bot...

Mutational status of naevus-associated melanomas.

BACKGROUND The origin of melanoma has always been a debated subject, as well as the role of adjacent melanocytic naevi. Epidemiological and histopathological studies point to melanomas arising either de novo or from a naevus. OBJECTIVES To evaluate the presence of mutations in genes from well-known melanomagenesis pathways in a large series of naevus-associated melanomas. MATERIALS AND METH...

Traumatized recurrent melanocytic naevus with typical starburst pattern on dermoscopy.

A 47-year-old Japanese woman presented with a 3month history of a black spot on a brown nodule. She had noticed a small nodule on her right arm during childhood. She noticed a black spot at the centre of the lesion after scratching, and therefore visited our department for evaluation of the lesion. On physical examination, a 2-mm diameter black spot was observed in the centre of a 4-mm diameter...

Congenital melanocytic naevus with atypical pigment network on dermoscopy.

Blue naevus with pigment network-like structure on dermoscopy.

A 58-year-old Japanese man presented with a lesion on his left forearm; a black-grey macule 4 mm in diameter that had appeared in his childhood (Fig. 1a). He worked in an office and had no history of trauma at the site of the lesion. BN and basal cell carcinoma was suspected macroscopically. On dermoscopy, however, there was a pigment network-like structure consisting of randomly arranged, blac...