DP23: Melanocytic naevus

Dysplastic melanocytic naevus syndrome.

Congenital melanocytic naevus with atypical pigment network on dermoscopy.

Proliferative nodule in small congenital melanocytic naevus after childhood.

© 2012 The Authors. doi: 10.2340/00015555-1186 Journal Compilation © 2012 Acta Dermato-Venereologica. ISSN 0001-5555 Congenital melanocytic naevi (CMNs) are divided into giant, medium-sized, and small types. Giant CMN measures more than 20 cm in maximal diameter, whereas small CMN measures less than 1.5 cm (1). The lifetime incidence of melanoma in giant CMN is estimated to be between 6.3% (2) ...

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...

Malignant melanoma arising from a small congenital melanocytic naevus.

A 29-year-old woman presented with a subcutaneous nodule within a pigmented macule on her left neck. The elliptic macule measured 1266 mm (Fig. 1), and had been present since birth, judging from her family’s statements. The subcutaneous nodule had gradually grown within the macule 12 months previously. The flesh colour around the black macule had changed into a blue tone occurring with the nodu...