Blue naevus with pigment network-like structure on dermoscopy.

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...

Congenital melanocytic naevus with atypical pigment network on dermoscopy.

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...

Pigmented Dermatofibrosarcoma Protuberans and Blue Naevi with Similar Dermoscopy: A Case Report.

A 71-year-old Japanese woman was referred to our department for evaluation of 3 pigmented lesions on her left buttock. She had been aware of the lesions for a few months. Physical examination revealed 3 blue nodules, approximately 7, 8 and 4 mm in diameter, located on the left buttock (Fig. 1a). Dermoscopic examination revealed a homogeneous blue pigmentation with whitish-veil structures in eac...

Assessment of the colors of melanin pigment in acral compound nevus by using a novel dermoscopy technique with surgical light illumination and saturation analysis

On dermoscopy, the amount and location of melanin pigment can be assessed on the basis of its colors, ranging from black, brown to blue-gray. However, accurately recognizing a variety of melanin colors is sometimes difficult because the color of melanin pigment might change according to the character and intensity of lighting, and small melanin particles of different colors might be intermingle...