There is no ‘pre’ melanoma

Disputing the idea that there is a 'borderline' or 'precursor' melanoma

According to the widely publicised ABCD clinical method of melanoma diagnosis, A stands for asymmetry, B for border irregularity, C for colours and D refers to a diameter of 6mm or more.

This has led to many patients and doctors believing that lesions less than 6mm in diameter are unlikely to be a melanoma.

To add to the confusion, the practice of many pathologists of calling feature-poor melanomas names like an ‘evolving melanoma in situ’, an ‘atypical lentigo’ or a ‘severely dysplastic naevus bordering on melanoma’ has given undeserved authenticity to the concept