Severely dysplastic naevi: a call for national guidance

There are currently no guidelines for the management of severely dysplastic naevi (SDN), either in the UK or internationally. There is a consensus for re-excision of SDN with positive margins. However, there is variation in clinical practice in the management of completely excised SDN. We carried out a retrospective observational study reviewing the management of SDN across two NHS trusts in the UK over a 5-year period. Our results demonstrate considerable variation in practice between the two trusts and potential overtreatment of completely excised SDN. This highlights the need for consensus-based and evidence-based guidelines to standardize care for patients with SDN.