Description: An inconspicuous lesion of the back: mainly pink, a bit scaly.

History: This lesion was discovered by a systematic exam. Clinically it was not much concerning, but as the dermoscopic view showed no clear (benign) sign, excision became mandatory. The pathology revealed a compound melanocytic proliferation, with a strong and atypical junctional activity. The final diagnosis being Melanoma in situ, which developed from a compound nevus.