Melanocytic lesions: not in the textbooks

The histological diagnosis of melanocytic lesions is probably one of the more difficult areas in histopathology because of the wide spectrum of melanocytic entities and all their subtle variations. Additionally, it is an area with significant medicolegal implications. While there is a vast literature in relation to melanocytic lesions, some histopathological features recognized through the personal experience of specialists are not described in the principal texts. This article reviews these lesser known features of the different categories of melanocytic lesion.