What's beneath this love-heart shaped lesion?

Confusion persists as to the role of naevi in malignant melanoma cases
heart-shaped lesion

The majority of melanomas arise without any evidence of a pre-existing naevus.

In cases where melanoma does occur in association with a naevus, there is persisting confusion about whether the malignancy arises as a distinct clone of cells within that naevus or whether the naevus undergoes a transition to melanoma.