Blue white veil

A 72-year-old man consulted for this black tumour on his back.

Dermoscopy revealed a sharply multi-coloured lesion without visible reticular pigment network covered by a central crust.

Most strikingly features were:

• a blue white veil
• irregular and thick vessels (see white square)

in favour of a melanoma.

Atypical (dysplastic) nevus

A 68-year-old woman consulted for this pigmented lesion on her back.
Dermoscopy revealed an asymmetric lesion with an atypical reticular and homogenous pattern , a few subtle blue-white structures (circle) and brown dots (arrow)
The lesion was excised and pathology revealed an atypical (dysplastic) compound type.