Lentigo maligna and lentigo maligna melanoma in patients younger than 50 years old: A multicentric international clinical-dermoscopic study.

LM is not a disease limited to the elderly as previously thought. LM presenting in young adults tends to be smaller and with fewer dermoscopic criteria making its diagnosis challenging. Careful evaluation of facial pigmented lesions prior to cosmetic procedures is mandatory to avoid incorrectly treating early LM as a benign lesion.